diff --git a/Dockerfile b/Dockerfile
index 9c36aabdf76f8ba8199e5be5081b97c7f237dc6b..88c6445d46708e434eb9d82b560588e46237af6b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@ ENV RAILS_ENV=production \
     DISCOURSE_SERVE_STATIC_ASSETS=true \
     GIFSICLE_VERSION=1.88 \
     PNGQUANT_VERSION=2.8.0 \
-    DISCOURSE_VERSION=1.9.0.beta11 \
+    DISCOURSE_VERSION=1.9.0.beta12 \
     BUILD_DEPS="\
       autoconf \
       jhead \