diff --git a/Dockerfile b/Dockerfile
index a44dddf..9abcc95 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,10 @@ FROM python:3.7-alpine
 
 RUN apk add git
 
-RUN pip install snakeoil
+RUN apk add --no-cache --virtual .build-deps \
+        gcc \
+    && pip install snakeoil \
+    && apk del .build-deps
 
 RUN git+https://anongit.gentoo.org/git/proj/catalyst.git