diff --git a/webserver/Dockerfile b/webserver/Dockerfile
index 565c9ea..b32372d 100644
--- a/webserver/Dockerfile
+++ b/webserver/Dockerfile
@@ -195,6 +195,10 @@ RUN cd /rw/extensions/PageForms && patch -l -p0 < PF_FormPrinter.php.$MW_REL_BRA
 # (prevents auto-filled destination filename from being overwritten by uploaded file's name)
 RUN cd /rw/extensions/PageForms && patch -l -p0 < PF_upload.js.$MW_REL_BRANCH.patch
 
+# Apply PageForms patch to fix missing 'pf' dependency in rating module
+# (adds ext.pageforms dependency to ext.pageforms.rating module to prevent "pf is not defined" error)
+RUN cd /rw/extensions/PageForms && patch -l -p0 < extension.json.$MW_REL_BRANCH.patch
+
 # Sphinx: Setup cron job
 RUN apt-get install -y cron \
  && mv -f /rw/extensions/SphinxSearch/sphinx.cron /etc/cron.d/sphinxsearch-update \
diff --git a/webserver/html/ropewiki/extensions/PageForms/extension.json.REL1_39.patch b/webserver/html/ropewiki/extensions/PageForms/extension.json.REL1_39.patch
new file mode 100644
index 0000000..d0250f2
--- /dev/null
+++ b/webserver/html/ropewiki/extensions/PageForms/extension.json.REL1_39.patch
@@ -0,0 +1,12 @@
+--- extension.json	2026-04-21 14:30:13.653018861 -0700
++++ extension.json	2026-04-21 14:31:15.113484589 -0700
+@@ -339,6 +339,9 @@
+ 			"scripts": [
+ 				"libs/jquery.rateyo.js",
+ 				"libs/PF_rating.js"
++			],
++			"dependencies": [
++				"ext.pageforms"
+ 			]
+ 		},
+ 		"ext.pageforms.rating.styles": {