diff --git a/rss-bridge/Dockerfile b/rss-bridge/Dockerfile
index 18f0668..614beb3 100644
--- a/rss-bridge/Dockerfile
+++ b/rss-bridge/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.12
+FROM alpine:3.13
 
 RUN apk add --no-cache \
         git su-exec nginx php7 php7-fpm \