diff --git a/.github/workflows/fastapi-gunicorn.yaml b/.github/workflows/fastapi-gunicorn.yaml
index 4b06d4a..9a4161f 100644
--- a/.github/workflows/fastapi-gunicorn.yaml
+++ b/.github/workflows/fastapi-gunicorn.yaml
@@ -22,10 +22,10 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
-      - name: Set up Python 3.8
+      - name: Set up Python 3.10
         uses: actions/setup-python@v2
         with:
-          python-version: "3.8"
+          python-version: "3.10"
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
@@ -37,17 +37,20 @@ jobs:
           DOCKER_BUILDKIT: 1
         run: ./test.sh
   release:
-    runs-on: ubuntu-latest
-    # Only push the image on new tag event
-    if: ${{ startsWith(github.ref, 'refs/tags/') }}
+    runs-on: [self-hosted, docker, integration]
+    env:
+      # list of Docker images to use as base name for tags
+      IMAGE_REPO: quay.io/basisai/express-fastapi
+    outputs:
+      image-tags: ${{ env.IMAGE_REPO }}:${{ steps.docker_meta.outputs.version }}
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
       - name: Docker meta
         id: docker_meta
-        uses: crazy-max/ghaction-docker-meta@v1
+        uses: docker/metadata-action@v3
         with:
-          images: quay.io/basisai/express-fastapi
+          images: ${{ env.IMAGE_REPO }}
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v1
       - name: Set up Docker Buildx
@@ -67,6 +70,19 @@ jobs:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Build and push
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          # platforms: linux/amd64,linux/arm64,linux/386
+          tags: ${{ steps.docker_meta.outputs.tags }}
+          labels: ${{ steps.docker_meta.outputs.labels }}
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache
+          outputs: type=docker,dest=/tmp/express-fastapi-${{ github.sha }}.tar
+      - name: Build and push
+        if: ${{ github.event_name != 'pull_request' }}
         id: docker_build
         uses: docker/build-push-action@v2
         with:
@@ -75,8 +91,65 @@ jobs:
           build-args: |
             APP=fastapi-gunicorn
           # platforms: linux/amd64,linux/arm64,linux/386
-          push: ${{ github.event_name != 'pull_request' }}
+          push: true
           tags: ${{ steps.docker_meta.outputs.tags }}
           labels: ${{ steps.docker_meta.outputs.labels }}
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
+      - name: Upload artifact
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: docker-image
+          path: /tmp/express-fastapi-${{ github.sha }}.tar
+          retention-days: 1
+  scan:
+    runs-on: [self-hosted, docker, integration]
+    needs: release
+    strategy:
+      matrix:
+        include:
+          - severity: "MEDIUM,HIGH"
+            exit-code: "0"
+          - severity: "CRITICAL"
+            exit-code: "1"
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Download artifact
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: actions/download-artifact@v2
+        with:
+          name: docker-image
+          path: tmp
+      - name: Run Trivy vulnerability scanner for ${{ matrix.severity }} severity
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: aquasecurity/trivy-action@master
+        with:
+          input: tmp/express-fastapi-${{ github.sha }}.tar
+          format: 'table'
+          exit-code: ${{ matrix.exit-code }}
+          ignore-unfixed: true
+          vuln-type: 'os,library'
+          severity: ${{ matrix.severity }}
+        continue-on-error: true
+      - name: Run Trivy vulnerability scanner for ${{ matrix.severity }} severity
+        if: ${{ github.event_name != 'pull_request' }}
+        uses: aquasecurity/trivy-action@master
+        with:
+          image-ref: ${{ needs.release.outputs.image-tags }}
+          format: 'template'
+          template: '@/contrib/sarif.tpl'
+          output: 'trivy-results-${{ matrix.severity }}.sarif'
+          exit-code: ${{ matrix.exit-code }}
+          ignore-unfixed: true
+          vuln-type: 'os,library'
+          severity: ${{ matrix.severity }}
+        continue-on-error: true
+      - name: Upload Trivy scan results to GitHub Security tab
+        if: ${{ github.event_name != 'pull_request' }}
+        uses: github/codeql-action/upload-sarif@v1
+        with:
+          sarif_file: 'trivy-results-${{ matrix.severity }}.sarif'
diff --git a/.github/workflows/flask-gunicorn.yaml b/.github/workflows/flask-gunicorn.yaml
index 499a19c..64169b7 100644
--- a/.github/workflows/flask-gunicorn.yaml
+++ b/.github/workflows/flask-gunicorn.yaml
@@ -22,10 +22,10 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
-      - name: Set up Python 3.8
+      - name: Set up Python 3.10
         uses: actions/setup-python@v2
         with:
-          python-version: "3.8"
+          python-version: "3.10"
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
@@ -37,17 +37,20 @@ jobs:
           DOCKER_BUILDKIT: 1
         run: ./test.sh
   release:
-    runs-on: ubuntu-latest
-    # Only push the image on new tag event
-    if: ${{ startsWith(github.ref, 'refs/tags/') }}
+    runs-on: [self-hosted, docker, integration]
+    env:
+      # list of Docker images to use as base name for tags
+      IMAGE_REPO: quay.io/basisai/express-flask
+    outputs:
+      image-tags: ${{ env.IMAGE_REPO }}:${{ steps.docker_meta.outputs.version }}
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
       - name: Docker meta
         id: docker_meta
-        uses: crazy-max/ghaction-docker-meta@v1
+        uses: docker/metadata-action@v3
         with:
-          images: quay.io/basisai/express-flask
+          images: ${{ env.IMAGE_REPO }}
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v1
       - name: Set up Docker Buildx
@@ -67,7 +70,19 @@ jobs:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Build and push
-        id: docker_build
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          # platforms: linux/amd64,linux/arm64,linux/386
+          tags: ${{ steps.docker_meta.outputs.tags }}
+          labels: ${{ steps.docker_meta.outputs.labels }}
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache
+          outputs: type=docker,dest=/tmp/express-flask-${{ github.sha }}.tar
+      - name: Build and push
+        if: ${{ github.event_name != 'pull_request' }}
         uses: docker/build-push-action@v2
         with:
           context: .
@@ -75,9 +90,65 @@ jobs:
           build-args: |
             APP=flask-gunicorn
           # platforms: linux/amd64,linux/arm64,linux/386
-          push: ${{ github.event_name != 'pull_request' }}
+          push: true
           tags: ${{ steps.docker_meta.outputs.tags }}
           labels: ${{ steps.docker_meta.outputs.labels }}
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
-
+      - name: Upload artifact
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: docker-image
+          path: /tmp/express-flask-${{ github.sha }}.tar
+          retention-days: 1
+  scan:
+    runs-on: [self-hosted, docker, integration]
+    needs: release
+    strategy:
+      matrix:
+        include:
+          - severity: "MEDIUM,HIGH"
+            exit-code: "0"
+          - severity: "CRITICAL"
+            exit-code: "1"
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Download artifact
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: actions/download-artifact@v2
+        with:
+          name: docker-image
+          path: tmp
+      - name: Run Trivy vulnerability scanner for ${{ matrix.severity }} severity
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: aquasecurity/trivy-action@master
+        with:
+          input: tmp/express-flask-${{ github.sha }}.tar
+          format: 'table'
+          exit-code: ${{ matrix.exit-code }}
+          ignore-unfixed: true
+          vuln-type: 'os,library'
+          severity: ${{ matrix.severity }}
+        continue-on-error: true
+      - name: Run Trivy vulnerability scanner for ${{ matrix.severity }} severity
+        if: ${{ github.event_name != 'pull_request' }}
+        uses: aquasecurity/trivy-action@master
+        with:
+          image-ref: ${{ needs.release.outputs.image-tags }}
+          format: 'template'
+          template: '@/contrib/sarif.tpl'
+          output: 'trivy-results-${{ matrix.severity }}.sarif'
+          exit-code: ${{ matrix.exit-code }}
+          ignore-unfixed: true
+          vuln-type: 'os,library'
+          severity: ${{ matrix.severity }}
+        continue-on-error: true
+      - name: Upload Trivy scan results to GitHub Security tab
+        if: ${{ github.event_name != 'pull_request' }}
+        uses: github/codeql-action/upload-sarif@v1
+        with:
+          sarif_file: 'trivy-results-${{ matrix.severity }}.sarif'
diff --git a/Dockerfile b/Dockerfile
index bdbbe54..b7b5707 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG BASE=python:3.8.7
+ARG BASE=python:3.9
 FROM ${BASE}
 
 WORKDIR /app
diff --git a/README.md b/README.md
index a0a86c5..a9b8d01 100644
--- a/README.md
+++ b/README.md
@@ -168,12 +168,12 @@ docker build --build-arg APP=fastapi-gunicorn . -t fastapi-gunicorn
 
 To run tests for all server and framework flavours, simply run `./test.sh` from the repo directory.
 
-Individual images can be tested using `docker-compose` from the current directory by setting the `APP` and `MODEL` environment variables. For example,
+Individual images can be tested using `docker compose` from the current directory by setting the `APP` and `MODEL` environment variables. For example,
 
 ```bash
 # To test the flask-gunicorn stack with lightgbm model
-APP=flask-gunicorn MODEL=lightgbm docker-compose -f tests/docker-compose.yml up --build --abort-on-container-exit --always-recreate-deps
+APP=flask-gunicorn MODEL=lightgbm docker compose -f tests/docker-compose.yml up --build --abort-on-container-exit --always-recreate-deps
 
 # To test the fastapi-gunicorn stack with lightgbm model
-APP=fastapi-gunicorn MODEL=lightgbm docker-compose -f tests/docker-compose.yml up --build --abort-on-container-exit --always-recreate-deps
+APP=fastapi-gunicorn MODEL=lightgbm docker compose -f tests/docker-compose.yml up --build --abort-on-container-exit --always-recreate-deps
 ```
diff --git a/fastapi-gunicorn/requirements.txt b/fastapi-gunicorn/requirements.txt
index 8b252e9..c29d1d3 100644
--- a/fastapi-gunicorn/requirements.txt
+++ b/fastapi-gunicorn/requirements.txt
@@ -1,6 +1,6 @@
-bdrk==0.9.1
+bdrk==0.9.2
 boxkite==0.0.5
-uvicorn==0.14.0
+uvicorn==0.16.0
 gunicorn==20.1.0
-fastapi==0.67.0
+fastapi==0.70.1
 python-multipart==0.0.5
diff --git a/flask-gunicorn-gpu/requirements.txt b/flask-gunicorn-gpu/requirements.txt
index d720696..ec528f4 100644
--- a/flask-gunicorn-gpu/requirements.txt
+++ b/flask-gunicorn-gpu/requirements.txt
@@ -1,4 +1,4 @@
-bdrk==0.9.1
+bdrk==0.9.2
 boxkite==0.0.5
-flask==2.0.1
+flask==2.0.2
 gunicorn==20.1.0
diff --git a/flask-gunicorn/requirements.txt b/flask-gunicorn/requirements.txt
index d720696..ec528f4 100644
--- a/flask-gunicorn/requirements.txt
+++ b/flask-gunicorn/requirements.txt
@@ -1,4 +1,4 @@
-bdrk==0.9.1
+bdrk==0.9.2
 boxkite==0.0.5
-flask==2.0.1
+flask==2.0.2
 gunicorn==20.1.0
diff --git a/test.sh b/test.sh
index d32b083..ef7a895 100755
--- a/test.sh
+++ b/test.sh
@@ -29,11 +29,11 @@ for app in "${targets[@]}"; do
         export MODEL="$model"
 
         # Save exit code for use later
-        docker-compose -f tests/docker-compose.yml -p "$app" up \
+        docker compose -f tests/docker-compose.yml -p "$app" up \
         --build --abort-on-container-exit --always-recreate-deps || exit_code=$?
 
         # Clean up containers
-        docker-compose -f tests/docker-compose.yml -p "$app" down -v --remove-orphans
+        docker compose -f tests/docker-compose.yml -p "$app" down -v --remove-orphans
 
         # Abort early on failure
         if [[ $exit_code -ne 0 ]]; then
diff --git a/tests/docker-compose.yml b/tests/docker-compose.yml
index d536a12..464073b 100644
--- a/tests/docker-compose.yml
+++ b/tests/docker-compose.yml
@@ -1,7 +1,7 @@
 version: "3"
 services:
   test:
-    image: python:3.8.5
+    image: python:3.10
     environment:
       HOST: app
       MODEL: ${MODEL:-lightgbm}
@@ -38,7 +38,7 @@ services:
         pip install -r requirements.txt
         # Run unit test
         python -m unittest -v test_serve.py
-        /app/entrypoint.sh
+        exec /app/entrypoint.sh
     volumes:
       - ./${MODEL:-lightgbm}/artefact:/artefact
       - ./${MODEL:-lightgbm}/model-server:/model-server
diff --git a/tests/lightgbm/artefact/histogram.prom b/tests/lightgbm/artefact/histogram.prom
old mode 100755
new mode 100644
index e05d408..98739d6
--- a/tests/lightgbm/artefact/histogram.prom
+++ b/tests/lightgbm/artefact/histogram.prom
@@ -1,571 +1,64 @@
-# HELP feature_0_value_baseline_total Baseline values for feature: Intl_Plan
-# TYPE feature_0_value_baseline_total counter
-feature_0_value_baseline_total{bin="0.0"} 911.0
-feature_0_value_baseline_total{bin="1.0"} 89.0
-# HELP feature_1_value_baseline_total Baseline values for feature: VMail_Plan
-# TYPE feature_1_value_baseline_total counter
-feature_1_value_baseline_total{bin="0.0"} 719.0
-feature_1_value_baseline_total{bin="1.0"} 281.0
-# HELP feature_2_value_baseline_total Baseline values for feature: VMail_Message
-# TYPE feature_2_value_baseline_total counter
-feature_2_value_baseline_total{bin="0.0"} 719.0
-feature_2_value_baseline_total{bin="8.0"} 1.0
-feature_2_value_baseline_total{bin="9.0"} 1.0
-feature_2_value_baseline_total{bin="10.0"} 1.0
-feature_2_value_baseline_total{bin="11.0"} 1.0
-feature_2_value_baseline_total{bin="12.0"} 3.0
-feature_2_value_baseline_total{bin="14.0"} 1.0
-feature_2_value_baseline_total{bin="15.0"} 2.0
-feature_2_value_baseline_total{bin="16.0"} 4.0
-feature_2_value_baseline_total{bin="17.0"} 4.0
-feature_2_value_baseline_total{bin="18.0"} 2.0
-feature_2_value_baseline_total{bin="19.0"} 6.0
-feature_2_value_baseline_total{bin="20.0"} 9.0
-feature_2_value_baseline_total{bin="21.0"} 11.0
-feature_2_value_baseline_total{bin="22.0"} 13.0
-feature_2_value_baseline_total{bin="23.0"} 14.0
-feature_2_value_baseline_total{bin="24.0"} 9.0
-feature_2_value_baseline_total{bin="25.0"} 14.0
-feature_2_value_baseline_total{bin="26.0"} 12.0
-feature_2_value_baseline_total{bin="27.0"} 14.0
-feature_2_value_baseline_total{bin="28.0"} 14.0
-feature_2_value_baseline_total{bin="29.0"} 21.0
-feature_2_value_baseline_total{bin="30.0"} 16.0
-feature_2_value_baseline_total{bin="31.0"} 17.0
-feature_2_value_baseline_total{bin="32.0"} 13.0
-feature_2_value_baseline_total{bin="33.0"} 12.0
-feature_2_value_baseline_total{bin="34.0"} 10.0
-feature_2_value_baseline_total{bin="35.0"} 8.0
-feature_2_value_baseline_total{bin="36.0"} 11.0
-feature_2_value_baseline_total{bin="37.0"} 8.0
-feature_2_value_baseline_total{bin="38.0"} 6.0
-feature_2_value_baseline_total{bin="39.0"} 8.0
-feature_2_value_baseline_total{bin="40.0"} 3.0
-feature_2_value_baseline_total{bin="41.0"} 1.0
-feature_2_value_baseline_total{bin="42.0"} 5.0
-feature_2_value_baseline_total{bin="44.0"} 1.0
-feature_2_value_baseline_total{bin="46.0"} 1.0
-feature_2_value_baseline_total{bin="47.0"} 1.0
-feature_2_value_baseline_total{bin="48.0"} 2.0
-feature_2_value_baseline_total{bin="49.0"} 1.0
-# HELP feature_3_value_baseline_total Baseline values for feature: CustServ_Calls
-# TYPE feature_3_value_baseline_total counter
-feature_3_value_baseline_total{bin="0.0"} 203.0
-feature_3_value_baseline_total{bin="1.0"} 365.0
-feature_3_value_baseline_total{bin="2.0"} 219.0
-feature_3_value_baseline_total{bin="3.0"} 124.0
-feature_3_value_baseline_total{bin="4.0"} 58.0
-feature_3_value_baseline_total{bin="5.0"} 15.0
-feature_3_value_baseline_total{bin="6.0"} 8.0
-feature_3_value_baseline_total{bin="7.0"} 4.0
-feature_3_value_baseline_total{bin="8.0"} 2.0
-feature_3_value_baseline_total{bin="9.0"} 2.0
-# HELP feature_4_value_baseline Baseline values for feature: Day_Mins
-# TYPE feature_4_value_baseline histogram
-feature_4_value_baseline_bucket{le="0.0"} 1.0
-feature_4_value_baseline_bucket{le="14.61666664481163"} 2.0
-feature_4_value_baseline_bucket{le="29.23333328962326"} 3.0
-feature_4_value_baseline_bucket{le="43.84999993443489"} 5.0
-feature_4_value_baseline_bucket{le="58.46666657924652"} 11.0
-feature_4_value_baseline_bucket{le="73.08333322405815"} 28.0
-feature_4_value_baseline_bucket{le="87.69999986886978"} 47.0
-feature_4_value_baseline_bucket{le="102.31666651368141"} 81.0
-feature_4_value_baseline_bucket{le="116.93333315849304"} 131.0
-feature_4_value_baseline_bucket{le="131.54999980330467"} 189.0
-feature_4_value_baseline_bucket{le="146.1666664481163"} 270.0
-feature_4_value_baseline_bucket{le="160.78333309292793"} 375.0
-feature_4_value_baseline_bucket{le="175.39999973773956"} 469.0
-feature_4_value_baseline_bucket{le="190.0166663825512"} 567.0
-feature_4_value_baseline_bucket{le="204.63333302736282"} 675.0
-feature_4_value_baseline_bucket{le="219.24999967217445"} 764.0
-feature_4_value_baseline_bucket{le="233.86666631698608"} 843.0
-feature_4_value_baseline_bucket{le="248.48333296179771"} 897.0
-feature_4_value_baseline_bucket{le="263.09999960660934"} 936.0
-feature_4_value_baseline_bucket{le="277.716666251421"} 968.0
-feature_4_value_baseline_bucket{le="292.3333328962326"} 983.0
-feature_4_value_baseline_bucket{le="306.94999954104424"} 993.0
-feature_4_value_baseline_bucket{le="321.56666618585587"} 996.0
-feature_4_value_baseline_bucket{le="336.1833328306675"} 998.0
-feature_4_value_baseline_bucket{le="350.7999994754791"} 1000.0
-feature_4_value_baseline_bucket{le="+Inf"} 1000.0
-feature_4_value_baseline_count 1000.0
-feature_4_value_baseline_sum 179179.30002207693
-# HELP feature_5_value_baseline Baseline values for feature: Day_Calls
-# TYPE feature_5_value_baseline histogram
-feature_5_value_baseline_bucket{le="0.0"} 1.0
-feature_5_value_baseline_bucket{le="5.517241379310345"} 1.0
-feature_5_value_baseline_bucket{le="11.03448275862069"} 1.0
-feature_5_value_baseline_bucket{le="16.551724137931036"} 1.0
-feature_5_value_baseline_bucket{le="22.06896551724138"} 1.0
-feature_5_value_baseline_bucket{le="27.586206896551726"} 1.0
-feature_5_value_baseline_bucket{le="33.10344827586207"} 1.0
-feature_5_value_baseline_bucket{le="38.62068965517241"} 2.0
-feature_5_value_baseline_bucket{le="44.13793103448276"} 3.0
-feature_5_value_baseline_bucket{le="49.65517241379311"} 6.0
-feature_5_value_baseline_bucket{le="55.17241379310345"} 12.0
-feature_5_value_baseline_bucket{le="60.689655172413794"} 22.0
-feature_5_value_baseline_bucket{le="66.20689655172414"} 50.0
-feature_5_value_baseline_bucket{le="71.72413793103449"} 84.0
-feature_5_value_baseline_bucket{le="77.24137931034483"} 130.0
-feature_5_value_baseline_bucket{le="82.75862068965517"} 190.0
-feature_5_value_baseline_bucket{le="88.27586206896552"} 278.0
-feature_5_value_baseline_bucket{le="93.79310344827587"} 363.0
-feature_5_value_baseline_bucket{le="99.31034482758622"} 474.0
-feature_5_value_baseline_bucket{le="104.82758620689656"} 562.0
-feature_5_value_baseline_bucket{le="110.3448275862069"} 692.0
-feature_5_value_baseline_bucket{le="115.86206896551725"} 759.0
-feature_5_value_baseline_bucket{le="121.37931034482759"} 858.0
-feature_5_value_baseline_bucket{le="126.89655172413794"} 903.0
-feature_5_value_baseline_bucket{le="132.41379310344828"} 945.0
-feature_5_value_baseline_bucket{le="137.93103448275863"} 966.0
-feature_5_value_baseline_bucket{le="143.44827586206898"} 987.0
-feature_5_value_baseline_bucket{le="148.96551724137933"} 990.0
-feature_5_value_baseline_bucket{le="154.48275862068965"} 998.0
-feature_5_value_baseline_bucket{le="160.0"} 1000.0
-feature_5_value_baseline_bucket{le="+Inf"} 1000.0
-feature_5_value_baseline_count 1000.0
-feature_5_value_baseline_sum 100467.0
-# HELP feature_6_value_baseline Baseline values for feature: Eve_Mins
-# TYPE feature_6_value_baseline histogram
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-# HELP feature_7_value_baseline Baseline values for feature: Eve_Calls
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-# HELP feature_8_value_baseline Baseline values for feature: Night_Mins
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-# HELP feature_9_value_baseline Baseline values for feature: Night_Calls
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-# HELP feature_10_value_baseline Baseline values for feature: Intl_Mins
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-# HELP feature_11_value_baseline_total Baseline values for feature: Intl_Calls
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-# HELP feature_12_value_baseline_total Baseline values for feature: Area_Code_408
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-# HELP feature_13_value_baseline_total Baseline values for feature: Area_Code_415
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-# HELP feature_14_value_baseline_total Baseline values for feature: Area_Code_510
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-# HELP feature_15_value_baseline_total Baseline values for feature: State_AK
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-# HELP feature_17_value_baseline_total Baseline values for feature: State_AR
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-# HELP feature_18_value_baseline_total Baseline values for feature: State_AZ
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-# HELP feature_19_value_baseline_total Baseline values for feature: State_CA
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-# HELP feature_21_value_baseline_total Baseline values for feature: State_CT
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-# HELP feature_23_value_baseline_total Baseline values for feature: State_DE
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-# HELP feature_24_value_baseline_total Baseline values for feature: State_FL
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-# HELP feature_25_value_baseline_total Baseline values for feature: State_GA
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-# HELP feature_26_value_baseline_total Baseline values for feature: State_HI
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-# HELP feature_29_value_baseline_total Baseline values for feature: State_IL
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-# HELP feature_30_value_baseline_total Baseline values for feature: State_IN
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-# HELP feature_31_value_baseline_total Baseline values for feature: State_KS
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-# HELP feature_32_value_baseline_total Baseline values for feature: State_KY
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-# HELP feature_34_value_baseline_total Baseline values for feature: State_MA
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-# HELP feature_35_value_baseline_total Baseline values for feature: State_MD
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-# HELP feature_36_value_baseline_total Baseline values for feature: State_ME
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-# HELP feature_37_value_baseline_total Baseline values for feature: State_MI
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-# HELP feature_38_value_baseline_total Baseline values for feature: State_MN
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-# HELP feature_39_value_baseline_total Baseline values for feature: State_MO
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-# HELP feature_40_value_baseline_total Baseline values for feature: State_MS
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-# HELP feature_41_value_baseline_total Baseline values for feature: State_MT
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-# HELP feature_42_value_baseline_total Baseline values for feature: State_NC
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-# HELP feature_43_value_baseline_total Baseline values for feature: State_ND
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-# HELP feature_44_value_baseline_total Baseline values for feature: State_NE
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-# HELP feature_56_value_baseline_total Baseline values for feature: State_SD
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-# HELP feature_57_value_baseline_total Baseline values for feature: State_TN
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-# HELP feature_58_value_baseline_total Baseline values for feature: State_TX
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-# HELP feature_59_value_baseline_total Baseline values for feature: State_UT
-# TYPE feature_59_value_baseline_total counter
-feature_59_value_baseline_total{bin="0.0"} 973.0
-feature_59_value_baseline_total{bin="1.0"} 27.0
-# HELP feature_60_value_baseline_total Baseline values for feature: State_VA
-# TYPE feature_60_value_baseline_total counter
-feature_60_value_baseline_total{bin="0.0"} 973.0
-feature_60_value_baseline_total{bin="1.0"} 27.0
-# HELP feature_61_value_baseline_total Baseline values for feature: State_VT
-# TYPE feature_61_value_baseline_total counter
-feature_61_value_baseline_total{bin="0.0"} 975.0
-feature_61_value_baseline_total{bin="1.0"} 25.0
-# HELP feature_62_value_baseline_total Baseline values for feature: State_WA
-# TYPE feature_62_value_baseline_total counter
-feature_62_value_baseline_total{bin="0.0"} 980.0
-feature_62_value_baseline_total{bin="1.0"} 20.0
-# HELP feature_63_value_baseline_total Baseline values for feature: State_WI
-# TYPE feature_63_value_baseline_total counter
-feature_63_value_baseline_total{bin="0.0"} 978.0
-feature_63_value_baseline_total{bin="1.0"} 22.0
-# HELP feature_64_value_baseline_total Baseline values for feature: State_WV
-# TYPE feature_64_value_baseline_total counter
-feature_64_value_baseline_total{bin="0.0"} 976.0
-feature_64_value_baseline_total{bin="1.0"} 24.0
-# HELP feature_65_value_baseline_total Baseline values for feature: State_WY
-# TYPE feature_65_value_baseline_total counter
-feature_65_value_baseline_total{bin="0.0"} 974.0
-feature_65_value_baseline_total{bin="1.0"} 26.0
-# HELP inference_value_baseline Baseline inference values for test set
-# TYPE inference_value_baseline histogram
-inference_value_baseline_bucket{le="0.00"} 0.0
-inference_value_baseline_bucket{le="0.02"} 85.0
-inference_value_baseline_bucket{le="0.04"} 632.0
-inference_value_baseline_bucket{le="0.06"} 740.0
-inference_value_baseline_bucket{le="0.08"} 778.0
-inference_value_baseline_bucket{le="0.10"} 799.0
-inference_value_baseline_bucket{le="0.12"} 811.0
-inference_value_baseline_bucket{le="0.14"} 820.0
-inference_value_baseline_bucket{le="0.16"} 828.0
-inference_value_baseline_bucket{le="0.18"} 833.0
-inference_value_baseline_bucket{le="0.20"} 841.0
-inference_value_baseline_bucket{le="0.22"} 847.0
-inference_value_baseline_bucket{le="0.24"} 852.0
-inference_value_baseline_bucket{le="0.26"} 854.0
-inference_value_baseline_bucket{le="0.28"} 856.0
-inference_value_baseline_bucket{le="0.30"} 859.0
-inference_value_baseline_bucket{le="0.32"} 862.0
-inference_value_baseline_bucket{le="0.34"} 866.0
-inference_value_baseline_bucket{le="0.36"} 872.0
-inference_value_baseline_bucket{le="0.38"} 872.0
-inference_value_baseline_bucket{le="0.40"} 874.0
-inference_value_baseline_bucket{le="0.42"} 876.0
-inference_value_baseline_bucket{le="0.44"} 878.0
-inference_value_baseline_bucket{le="0.46"} 880.0
-inference_value_baseline_bucket{le="0.48"} 884.0
-inference_value_baseline_bucket{le="0.50"} 885.0
-inference_value_baseline_bucket{le="0.52"} 885.0
-inference_value_baseline_bucket{le="0.54"} 886.0
-inference_value_baseline_bucket{le="0.56"} 887.0
-inference_value_baseline_bucket{le="0.58"} 891.0
-inference_value_baseline_bucket{le="0.60"} 892.0
-inference_value_baseline_bucket{le="0.62"} 894.0
-inference_value_baseline_bucket{le="0.64"} 895.0
-inference_value_baseline_bucket{le="0.66"} 895.0
-inference_value_baseline_bucket{le="0.68"} 897.0
-inference_value_baseline_bucket{le="0.70"} 899.0
-inference_value_baseline_bucket{le="0.72"} 901.0
-inference_value_baseline_bucket{le="0.74"} 902.0
-inference_value_baseline_bucket{le="0.76"} 909.0
-inference_value_baseline_bucket{le="0.78"} 913.0
-inference_value_baseline_bucket{le="0.80"} 917.0
-inference_value_baseline_bucket{le="0.82"} 923.0
-inference_value_baseline_bucket{le="0.84"} 929.0
-inference_value_baseline_bucket{le="0.86"} 937.0
-inference_value_baseline_bucket{le="0.88"} 943.0
-inference_value_baseline_bucket{le="0.90"} 954.0
-inference_value_baseline_bucket{le="0.92"} 964.0
-inference_value_baseline_bucket{le="0.94"} 967.0
-inference_value_baseline_bucket{le="0.96"} 990.0
-inference_value_baseline_bucket{le="0.98"} 1000.0
-inference_value_baseline_bucket{le="1.00"} 1000.0
-inference_value_baseline_bucket{le="+Inf"} 1000.0
-inference_value_baseline_count 1000.0
-inference_value_baseline_sum 144.2123526859723
+# HELP feature_0_value_baseline Baseline values for feature: sepal length (cm)
+# TYPE feature_0_value_baseline histogram
+feature_0_value_baseline_bucket{le="4.3"} 1.0
+feature_0_value_baseline_bucket{le="4.75"} 7.0
+feature_0_value_baseline_bucket{le="5.2"} 26.0
+feature_0_value_baseline_bucket{le="5.65"} 35.0
+feature_0_value_baseline_bucket{le="6.1"} 52.0
+feature_0_value_baseline_bucket{le="6.550000000000001"} 66.0
+feature_0_value_baseline_bucket{le="7.0"} 80.0
+feature_0_value_baseline_bucket{le="7.45"} 85.0
+feature_0_value_baseline_bucket{le="7.9"} 89.0
+feature_0_value_baseline_bucket{le="+Inf"} 89.0
+feature_0_value_baseline_count 89.0
+feature_0_value_baseline_sum 526.2
+# HELP feature_1_value_baseline Baseline values for feature: sepal width (cm)
+# TYPE feature_1_value_baseline histogram
+feature_1_value_baseline_bucket{le="2.2"} 1.0
+feature_1_value_baseline_bucket{le="2.3636363636363638"} 5.0
+feature_1_value_baseline_bucket{le="2.5272727272727273"} 12.0
+feature_1_value_baseline_bucket{le="2.690909090909091"} 16.0
+feature_1_value_baseline_bucket{le="2.8545454545454545"} 28.0
+feature_1_value_baseline_bucket{le="3.018181818181818"} 53.0
+feature_1_value_baseline_bucket{le="3.1818181818181817"} 62.0
+feature_1_value_baseline_bucket{le="3.3454545454545457"} 72.0
+feature_1_value_baseline_bucket{le="3.509090909090909"} 82.0
+feature_1_value_baseline_bucket{le="3.672727272727273"} 84.0
+feature_1_value_baseline_bucket{le="3.836363636363636"} 88.0
+feature_1_value_baseline_bucket{le="4.0"} 89.0
+feature_1_value_baseline_bucket{le="+Inf"} 89.0
+feature_1_value_baseline_count 89.0
+feature_1_value_baseline_sum 267.6
+# HELP feature_2_value_baseline Baseline values for feature: petal length (cm)
+# TYPE feature_2_value_baseline histogram
+feature_2_value_baseline_bucket{le="1.0"} 1.0
+feature_2_value_baseline_bucket{le="1.7375"} 26.0
+feature_2_value_baseline_bucket{le="2.475"} 28.0
+feature_2_value_baseline_bucket{le="3.2125000000000004"} 29.0
+feature_2_value_baseline_bucket{le="3.95"} 35.0
+feature_2_value_baseline_bucket{le="4.6875"} 50.0
+feature_2_value_baseline_bucket{le="5.425000000000001"} 72.0
+feature_2_value_baseline_bucket{le="6.1625000000000005"} 85.0
+feature_2_value_baseline_bucket{le="6.9"} 89.0
+feature_2_value_baseline_bucket{le="+Inf"} 89.0
+feature_2_value_baseline_count 89.0
+feature_2_value_baseline_sum 341.40000000000003
+# HELP feature_3_value_baseline Baseline values for feature: petal width (cm)
+# TYPE feature_3_value_baseline histogram
+feature_3_value_baseline_bucket{le="0.1"} 3.0
+feature_3_value_baseline_bucket{le="0.4"} 27.0
+feature_3_value_baseline_bucket{le="0.7"} 28.0
+feature_3_value_baseline_bucket{le="0.9999999999999999"} 28.0
+feature_3_value_baseline_bucket{le="1.3"} 45.0
+feature_3_value_baseline_bucket{le="1.6"} 58.0
+feature_3_value_baseline_bucket{le="1.9"} 71.0
+feature_3_value_baseline_bucket{le="2.2"} 81.0
+feature_3_value_baseline_bucket{le="2.5"} 89.0
+feature_3_value_baseline_bucket{le="+Inf"} 89.0
+feature_3_value_baseline_count 89.0
+feature_3_value_baseline_sum 109.5
+# HELP inference_value_baseline_total Baseline inference values for test set
+# TYPE inference_value_baseline_total counter
+inference_value_baseline_total{bin="setosa"} 22.0
+inference_value_baseline_total{bin="versicolor"} 23.0
+inference_value_baseline_total{bin="virginica"} 16.0
diff --git a/tests/lightgbm/artefact/model.pkl b/tests/lightgbm/artefact/model.pkl
old mode 100755
new mode 100644
index dd8601e..a8d2220
Binary files a/tests/lightgbm/artefact/model.pkl and b/tests/lightgbm/artefact/model.pkl differ
diff --git a/tests/lightgbm/model-server/requirements.txt b/tests/lightgbm/model-server/requirements.txt
index b9ec155..bdd7e94 100644
--- a/tests/lightgbm/model-server/requirements.txt
+++ b/tests/lightgbm/model-server/requirements.txt
@@ -1,3 +1,3 @@
-bdrk==0.8.2
-boxkite==0.0.4
-lightgbm==2.3.1
+bdrk==0.9.2
+boxkite==0.0.5
+lightgbm==3.3.1
diff --git a/tests/lightgbm/model-server/serve.py b/tests/lightgbm/model-server/serve.py
index e6b492a..b697eea 100644
--- a/tests/lightgbm/model-server/serve.py
+++ b/tests/lightgbm/model-server/serve.py
@@ -9,5 +9,5 @@ def __init__(self, path: Optional[str] = None):
         with open(path or "/artefact/model.pkl", "rb") as f:
             self.model = pickle.load(f)
 
-    def predict(self, features: List[List[float]]) -> List[float]:
-        return self.model.predict_proba(features)[:, 0].tolist()
+    def predict(self, features: List[List[float]]) -> List[str]:
+        return self.model.predict(features).tolist()
diff --git a/tests/lightgbm/model-server/test_serve.py b/tests/lightgbm/model-server/test_serve.py
index 86a274b..0872490 100644
--- a/tests/lightgbm/model-server/test_serve.py
+++ b/tests/lightgbm/model-server/test_serve.py
@@ -6,10 +6,11 @@
 
 class TestModelServer(TestCase):
     def test_validate(self):
-        p = Path(__file__).parent.parent / "artefact" / "model.pkl"
-        m = Model(path=p)
-        result = m.validate(http_body=str([[i for i in range(66)]]))
+        path = Path(__file__).parent.parent / "artefact" / "model.pkl"
+        m = Model(path=path)
+        features = list(range(m.model.n_features_))
+        result = m.validate(http_body=str([features]))
         self.assertIn("result", result)
         self.assertIn("prediction_id", result)
         self.assertEqual(len(result["prediction_id"].split("/")), 3)
-        self.assertEqual(result["result"], [0.9793770021409441])
+        self.assertEqual(result["result"], ["setosa"])
diff --git a/tests/test_e2e.py b/tests/test_e2e.py
index 4155baa..f4e1f10 100644
--- a/tests/test_e2e.py
+++ b/tests/test_e2e.py
@@ -1,5 +1,5 @@
 from os import getenv
-from typing import Optional
+from typing import Any, Optional
 from unittest import TestCase, skipIf
 
 from requests import Session
@@ -8,13 +8,14 @@
 MODELS = {
     "image": ["torchvision", "tf-vision"],
     "language": ["transformers", "tf-transformers"],
-    "churn": ["lightgbm"],
+    "classic": ["lightgbm"],
 }
 
 
-def get_inference_count(body: str, label: Optional[int] = None) -> int:
+def get_inference_count(body: str, label: Optional[Any] = None) -> int:
     if label is not None:
-        start = body.index(f'inference_value_total{{bin="{label}.0"}}')
+        bin = f"{label:.1f}" if isinstance(label, int) else str(label)
+        start = body.index(f'inference_value_total{{bin="{bin}"}}')
     else:
         start = body.index("inference_value_count")
     end = body.index("\n", start)
@@ -66,7 +67,7 @@ def test_sentiment(self):
             resp.raise_for_status()
             before = get_inference_count(resp.text)
 
-            for i in range(4):
+            for _ in range(4):
                 resp = s.post(self.url, json={"query": "Bedrock is amazing!"})
                 resp.raise_for_status()
                 result = resp.json()
@@ -81,24 +82,26 @@ def test_sentiment(self):
             after = get_inference_count(resp.text)
             self.assertEqual(after - before, 4)
 
-    @skipIf(getenv("MODEL", None) not in MODELS["churn"], "post body for churn prediction models")
+    @skipIf(getenv("MODEL", None) not in MODELS["classic"], "post body for classic models")
     def test_post(self):
         with Session() as s:
             resp = s.get(f"{self.url}/metrics")
             resp.raise_for_status()
-            before = get_inference_count(resp.text)
+            before = get_inference_count(resp.text, "setosa")
 
-            for i in range(4):
-                resp = s.post(self.url, json=[[i for i in range(66)]])
+            for _ in range(4):
+                # Updated together with tests/lightgbm/artefact/model.pkl
+                features = list(range(4))
+                resp = s.post(self.url, json=[features])
                 resp.raise_for_status()
                 result = resp.json()
                 self.assertIn("result", result)
                 self.assertIn("prediction_id", result)
                 self.assertEqual(len(result["prediction_id"].split("/")), 3)
-                self.assertEqual(result["result"], [0.9793770021409441])
+                self.assertEqual(result["result"], ["setosa"])
 
             # Verify that metrics sum up correctly
             resp = s.get(f"{self.url}/metrics")
             resp.raise_for_status()
-            after = get_inference_count(resp.text)
+            after = get_inference_count(resp.text, "setosa")
             self.assertEqual(after - before, 4)
diff --git a/tests/tf-transformers/model-server/requirements.txt b/tests/tf-transformers/model-server/requirements.txt
index 3e4d537..d667fd8 100644
--- a/tests/tf-transformers/model-server/requirements.txt
+++ b/tests/tf-transformers/model-server/requirements.txt
@@ -1 +1 @@
-transformers[tf]==3.0.2
+transformers[tf]==4.15.0
diff --git a/tests/tf-vision/model-server/requirements.txt b/tests/tf-vision/model-server/requirements.txt
index bb6524a..898092a 100644
--- a/tests/tf-vision/model-server/requirements.txt
+++ b/tests/tf-vision/model-server/requirements.txt
@@ -1,3 +1,3 @@
-tensorflow_hub==0.6.0
-tensorflow==2.5.1
-Pillow==8.3.2
+tensorflow-hub==0.12.0
+tensorflow==2.7.0
+Pillow==9.0.0
diff --git a/tests/torchvision/model-server/requirements.txt b/tests/torchvision/model-server/requirements.txt
index a33d1d0..da043cb 100644
--- a/tests/torchvision/model-server/requirements.txt
+++ b/tests/torchvision/model-server/requirements.txt
@@ -1 +1 @@
-torchvision==0.6.1
+torchvision==0.11.2
diff --git a/tests/transformers/model-server/requirements.txt b/tests/transformers/model-server/requirements.txt
index bcf7bd1..dffd564 100644
--- a/tests/transformers/model-server/requirements.txt
+++ b/tests/transformers/model-server/requirements.txt
@@ -1 +1 @@
-transformers[torch]==3.0.2
+transformers[torch]==4.15.0