diff --git a/Dockerfile b/Dockerfile
index fa3301a..bdafc0a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,13 +5,14 @@ RUN \
  apk add --no-cache --upgrade --virtual=build-dependencies \
 	py3-pip \
 	python3-dev && \
+ rm /usr/lib/python*/EXTERNALLY-MANAGED && \
  echo "**** install packages ****" && \
  apk add --no-cache \
 	python3 && \
  echo "**** install pip packages ****" && \
  pip3 install -U \
 	hiyapyco \
-	markupsafe==2.0.1 && \
+	markupsafe==2.1.5 && \
  echo "**** directories ****" && \
  mkdir -p \
 	/buildout && \