diff --git a/Dockerfile b/Dockerfile
index e529bae..5f1ec84 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -75,6 +75,6 @@ WORKDIR ${WORK_DIR}
 COPY --chown=user:user . ${SRC_DIR}
 
 # installs buildozer and dependencies
-RUN pip3 install --user Cython==0.28.6 ${SRC_DIR}
+RUN pip3 install --user --upgrade Cython==0.28.6 wheel pip virtualenv ${SRC_DIR}
 
 ENTRYPOINT ["buildozer"]