diff --git a/1.6/Dockerfile b/1.6/Dockerfile
index 5712bf1..7e80883 100644
--- a/1.6/Dockerfile
+++ b/1.6/Dockerfile
@@ -1,7 +1,7 @@
 FROM php:7.3.26-fpm-buster@sha256:cca12409a6b5f035af4e495a25fc2639fc82516d02e25457dbdf8505676ee4b0
 
 # renovate: datasource=github-tags depName=getgrav/grav versioning=semver
-ENV GRAV_VERSION 1.6.31
+ENV GRAV_VERSION 1.7.3
 
 RUN set -ex; \
     \