diff --git a/1.6/Dockerfile b/1.6/Dockerfile
index 3ec38b8..0b3c191 100644
--- a/1.6/Dockerfile
+++ b/1.6/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:7.3.25-fpm-buster@sha256:258e2d868886c1b7ed46fef3aceb17825442ab16c545371aa1458b02a2bfce67
+FROM php:7.4.13-fpm-buster@sha256:6619b207fdcf869046efd9eca99681d224ee664572039c30a977e5383028cb62
 
 # renovate: datasource=github-tags depName=getgrav/grav versioning=semver
 ENV GRAV_VERSION 1.6.31
diff --git a/1.7/Dockerfile b/1.7/Dockerfile
index df99f47..419263d 100644
--- a/1.7/Dockerfile
+++ b/1.7/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:7.3.25-fpm-buster@sha256:258e2d868886c1b7ed46fef3aceb17825442ab16c545371aa1458b02a2bfce67
+FROM php:7.4.13-fpm-buster@sha256:6619b207fdcf869046efd9eca99681d224ee664572039c30a977e5383028cb62
 
 # renovate: datasource=github-tags depName=getgrav/grav versioning=semver
 ENV GRAV_VERSION 1.7.0-rc.20