diff --git a/Dockerfile b/Dockerfile
index 8a203b6..3e6113d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM php:7.4-apache
 MAINTAINER Tyler Cinkant <tyler.cinkant@ubc.ca>
 
-ENV MOODLE_VERSION=3.9.21
+ENV MOODLE_VERSION=3.9.22
 ENV UPLOAD_MAX_FILESIZE=20M
 ENV PHP_MEMORY_LIMIT=128M
 ENV PHP_MAX_EXECUTION_TIME=30