diff --git a/.github/workflows/docker.yaml b/.github/workflows/docker.yaml
index 3675e382bfd5..679fdf1d8b97 100644
--- a/.github/workflows/docker.yaml
+++ b/.github/workflows/docker.yaml
@@ -76,8 +76,8 @@ jobs:
           python-version: ${{ env.python_version }}
       - name: Version Check
         run: |
-          pip install requests
-          pip install pyyaml
+          pip install requests==2.31.0
+          pip install pyyaml==6.0.1
           python3 ci/version_check.py
           echo "git_commit_hash=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
           echo "git_commit_date=$(git show -s --format=%ci)" >> $GITHUB_ENV
diff --git a/.github/workflows/qc_checks.yaml b/.github/workflows/qc_checks.yaml
index 78fe5b497dc7..f915b4c197d6 100644
--- a/.github/workflows/qc_checks.yaml
+++ b/.github/workflows/qc_checks.yaml
@@ -92,7 +92,7 @@ jobs:
         uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd # pin@v3.0.1
       - name: Check Version
         run: |
-          pip install requests
+          pip install requests==2.31.0
           python3 ci/version_check.py
 
   mkdocs:
@@ -110,7 +110,7 @@ jobs:
           python-version: ${{ env.python_version }}
       - name: Check Config
         run: |
-          pip install pyyaml
+          pip install pyyaml==6.0.1
           pip install -r docs/requirements.txt
           python docs/ci/check_mkdocs_config.py
       - name: Check Links
@@ -156,7 +156,7 @@ jobs:
       - name: Download public schema
         if: needs.paths-filter.outputs.api == 'false'
         run: |
-          pip install requests >/dev/null 2>&1
+          pip install requests==2.31.0 >/dev/null 2>&1
           version="$(python3 ci/version_check.py only_version 2>&1)"
           echo "Version: $version"
           url="https://raw.githubusercontent.com/inventree/schema/main/export/${version}/api.yaml"
@@ -175,7 +175,7 @@ jobs:
         id: version
         if: github.ref == 'refs/heads/master' && needs.paths-filter.outputs.api == 'true'
         run: |
-          pip install requests >/dev/null 2>&1
+          pip install requests==2.31.0 >/dev/null 2>&1
           version="$(python3 ci/version_check.py only_version 2>&1)"
           echo "Version: $version"
           echo "version=$version" >> "$GITHUB_OUTPUT"
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index ca751d0aacc0..1e787f1dd5aa 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # pin@v4.1.1
       - name: Version Check
         run: |
-          pip install requests
+          pip install requests==2.31.0
           python3 ci/version_check.py
       - name: Push to Stable Branch
         uses: ad-m/github-push-action@d91a481090679876dfc4178fef17f286781251df # pin@v0.8.0
diff --git a/Dockerfile b/Dockerfile
index bb3f3134e3bb..62e845bbecf3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -102,7 +102,7 @@ RUN ./install_build_packages.sh --no-cache --virtual .build-deps && \
 # Frontend builder image:
 FROM prebuild as frontend
 
-RUN apk add --no-cache --update nodejs npm && npm install -g yarn
+RUN apk add --no-cache --update nodejs npm && npm install -g yarn@v1.22.22
 RUN yarn config set network-timeout 600000 -g
 COPY InvenTree ${INVENTREE_HOME}/InvenTree
 COPY src ${INVENTREE_HOME}/src
@@ -141,11 +141,11 @@ EXPOSE 5173
 # Install packages required for building python packages
 RUN ./install_build_packages.sh
 
-RUN pip install uv --no-cache-dir && pip install -r base_requirements.txt --no-cache
+RUN pip install uv==0.1.26 --no-cache-dir && pip install -r base_requirements.txt --no-cache
 
 # Install nodejs / npm / yarn
 
-RUN apk add --no-cache --update nodejs npm && npm install -g yarn
+RUN apk add --no-cache --update nodejs npm && npm install -g yarn@v1.22.22
 RUN yarn config set network-timeout 600000 -g
 
 # The development image requires the source code to be mounted to /home/inventree/
diff --git a/contrib/packager.io/functions.sh b/contrib/packager.io/functions.sh
index 97dbd7102746..5b74029b9d10 100755
--- a/contrib/packager.io/functions.sh
+++ b/contrib/packager.io/functions.sh
@@ -90,7 +90,7 @@ function detect_envs() {
     echo "# Using existing config file: ${INVENTREE_CONFIG_FILE}"
 
     # Install parser
-    pip install jc -q
+    pip install jc==1.25.2 -q
 
     # Load config
     local CONF=$(cat ${INVENTREE_CONFIG_FILE} | jc --yaml)