diff --git a/Dockerfile b/Dockerfile
index 9e6831997..5df47e98a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,6 +17,7 @@ RUN set -x \
         libtool \
         make \
         nasm \
+        libpng-dev \
     && npm install --production \
     && apk del .build-dependencies