diff --git a/openedx/Dockerfile b/openedx/Dockerfile
index 37bf81e..448222a 100644
--- a/openedx/Dockerfile
+++ b/openedx/Dockerfile
@@ -28,6 +28,7 @@ RUN git clone $EDX_PLATFORM_REPOSITORY --branch $EDX_PLATFORM_VERSION --depth 1
 
 # Install python requirements (clone source repos in a separate dir, otherwise
 # will be overwritten when we mount edx-platform)
+ENV NO_PYTHON_UNINSTALL 1
 RUN pip install --src ../venv/src -r requirements/edx/base.txt
 RUN pip install --src ../venv/src -r requirements/edx/development.txt