diff --git a/docker/tanner/phpox/Dockerfile b/docker/tanner/phpox/Dockerfile
index c3a4eb70f..5dabe9db7 100644
--- a/docker/tanner/phpox/Dockerfile
+++ b/docker/tanner/phpox/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.10
+FROM alpine:3.13.9
 #
 # Install packages
 RUN sed -i 's/dl-cdn/dl-2/g' /etc/apk/repositories && \