diff --git a/Dockerfile b/Dockerfile
index 6e3636fa..add0a302 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,12 +4,7 @@ FROM python:3-slim
 ENV HOME /tmp
 
 RUN set -x \
-    && apt-get update -qq \
-    && apt-get install -y -qq --no-install-recommends git \
-    && pip install --no-cache-dir git+https://github.com/linkchecker/linkchecker.git@master \
-    && apt-get -y -qq purge git \
-    && apt-get autoremove -y -qq \
-    && apt-get clean -y -qq all \
+    && pip install --no-cache-dir https://github.com/linkchecker/linkchecker/archive/master.zip \
     && rm -rf /var/lib/apt/lists/* /usr/share/doc /usr/share/locale /usr/share/man
 
 # /mnt enables linkchecker to access to access files on local machine if needed