diff --git a/.github/workflows/ci_test_docker.yml b/.github/workflows/ci_test_docker.yml
index e6508a00d..62a94665a 100644
--- a/.github/workflows/ci_test_docker.yml
+++ b/.github/workflows/ci_test_docker.yml
@@ -26,4 +26,5 @@ jobs:
         run: |
           mkdir $HOME/output
           chmod a+rw $HOME/output
+          . $VIRTUAL_ENV/bin/activate
           docker run --rm -v $HOME/output:/home ${{ env.TEST_TAG }} ./run_scm.py -f ../../test/rt_test_cases.py --runtime_mult 0.1 -d