diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1777f69..bd39d2f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -15,6 +15,7 @@ jobs:
     steps:
       - checkout
       - run: pip3 install --upgrade pip
+      - run: if python3 --version | grep -q "Python 3.6"; then pip install --prefer-binary -U opencv-python-headless numpy; fi
       - run: make install deps-test-ubuntu PIP_INSTALL="pip3 install"
       - run: make coverage
       - codecov/upload