diff --git a/Dockerfile b/Dockerfile
index 3343c24..3d8c5e6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -27,8 +27,8 @@ RUN apk add --no-cache curl \
     su-exec
 
 ### phpBB
-ENV PHPBB_VERSION 3.3.12
-ENV PHPBB_SHA256 17828e961406291450878aa59bcbb04d642e711cc0028be831bdb7c803b13b3b
+ENV PHPBB_VERSION 3.3.13
+ENV PHPBB_SHA256 b99155065dc77af1f198e234d06f210929106c9682a30f650522e9398b242090
 
 WORKDIR /tmp