diff --git a/packager/Dockerfile b/packager/Dockerfile
index d862024..514404d 100644
--- a/packager/Dockerfile
+++ b/packager/Dockerfile
@@ -16,5 +16,6 @@ RUN mkdir -p /in && mkdir -p /out
 
 VOLUME /in
 VOLUME /out
+VOLUME /tmp
 
 CMD ./worldbuild-packager.py -i /in -o /out -a $API_URL -t $API_TOKEN