diff --git a/Dockerfile b/Dockerfile
index 2bbda29..022799a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,13 +8,13 @@ LABEL maintainer="Robert Kaussow <mail@geeklabor.de>" \
 
 ADD dist/ansible_later-*.whl /
 
-RUN \
-    apk update --no-cache && \
-    rm -rf /var/cache/apk/* && \
+RUN apk --update add --virtual .build-deps build-base libffi-dev libressl-dev && \
     pip install --upgrade --no-cache-dir pip && \
     pip install --no-cache-dir --find-links=. ansible-later && \
-    rm -f ansible_later-*.whl && \
-    rm -rf /root/.cache/
+    apk del .build-deps && \
+    rm -rf /var/cache/apk/* && \
+    rm -rf /root/.cache/  && \
+    rm -f ansible_later-*.whl
 
 USER root
 CMD []