diff --git a/firefox/Dockerfile b/firefox/Dockerfile
index 481285b..ab5eaa5 100644
--- a/firefox/Dockerfile
+++ b/firefox/Dockerfile
@@ -3,4 +3,4 @@ FROM jlesage/firefox
 LABEL MAINTAINER me@monlor.com
 LABEL VERSION 1.0.0
 
-RUN apk add --no-cache wqy-zenhei
\ No newline at end of file
+RUN apk add --no-cache wqy-zenhei musl-locales
\ No newline at end of file