diff --git a/.circleci/config.yml b/.circleci/config.yml
index 67d786485..33dd55868 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,27 +1,38 @@
-
 version: 2
 jobs:
   build:
     docker:
-      - image: circleci/node:4
+      - image: circleci/python:3.6.4
 
-    working_directory: ~/repo
+    working_directory: ~/stac
 
     steps:
       - checkout
-
+      - run: sudo chown -R circleci:circleci /usr/local/bin
+      - run: sudo chown -R circleci:circleci /usr/local/lib/python3.6/site-packages
+      - restore_cache:
+          key: v2-python-requirements-{{ checksum "requirements.txt" }}
       - run:
           name: install
           command: |
-            cd validation
-            npm install
-      
+            git clone git@github.com:sparkgeo/stac-validator.git ~/stac-validator
+            cd ~/stac-validator
+            pip install -r requirements.txt
+            pip install .
+      - save_cache:
+          key: v2-python-requirements-{{ checksum "requirements.txt" }}
+          paths:
+            - "~/.cache/pip"
+            - "/usr/local/lib/python3.6/site-packages"
       - run:
           name: validate
           command: |
-            cd validation
-            npm run validate_catalog -- -d ../catalog-spec/examples/catalog.json
-            npm run validate_collection -- -d ../collection-spec/examples/sentinel2.json
-            npm run validate_extension -- -s ../extensions/scientific/schema.json -d ../extensions/scientific/example-merraclim.json
-            npm run validate_item -- -d ../item-spec/examples/sample.json
-            # ToDo: More files should be validated
+            python ~/stac-validator/stac_validator.py catalog-spec/examples/catalog.json
+            python ~/stac-validator/stac_validator.py collection-spec/examples/sentinel2.json
+            python ~/stac-validator/stac_validator.py item-spec/examples/sample.json
+            python ~/stac-validator/stac_validator.py item-spec/examples/sample-full.json
+            python ~/stac-validator/stac_validator.py item-spec/examples/sentinel2-sample.json
+            python ~/stac-validator/stac_validator.py item-spec/examples/planet-sample.json
+            python ~/stac-validator/stac_validator.py item-spec/examples/landsat8-sample.json
+            python ~/stac-validator/stac_validator.py item-spec/examples/digitalglobe-sample.json
+            python ~/stac-validator/stac_validator.py item-spec/examples/CBERS_4_MUX_20170528_090_084_L2.json