diff --git a/Dockerfile b/Dockerfile
index 821b8ec..dfa02f9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM lthub/moodle:3.9.21
+FROM lthub/moodle:3.9.22
 MAINTAINER Tyler Cinkant <tyler.cinkant@ubc.ca>
 
 RUN curl -L https://moodle.org/plugins/download.php/21114/mod_attendance_moodle38_2019112500.zip -o /attendance.zip \