diff --git a/docker/Dockerfile b/docker/Dockerfile
index d9d602458..51225ead1 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -18,3 +18,5 @@ run stack install happy
 run apt-get -y install chromium
 
 env CHROME_BIN=chromium
+
+run apt-get -y install libghc-zlib-dev