diff --git a/utils/docker/Dockerfile b/utils/docker/Dockerfile
index 18e8bfe..27157d8 100755
--- a/utils/docker/Dockerfile
+++ b/utils/docker/Dockerfile
@@ -11,6 +11,8 @@
     && cd /son-emu \
     # we need to reset the __pycache__ for correct test discovery
     && rm -rf src/emuvim/test/__pycache__ \
+    && rm -rf src/emuvim/test/unittests/__pycache__ \
+    && rm -rf src/emuvim/test/integrationtests/__pycache__ \
     && python setup.py install \
     && echo 'Done'