diff --git a/1.6/Dockerfile b/1.6/Dockerfile
index 881d342..8988a33 100644
--- a/1.6/Dockerfile
+++ b/1.6/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:7.3.28-fpm-buster@sha256:e7dd1db79543120565510fe4f01e944b2b6a85352fd80637728652455a63113d
+FROM php:7.4.19-fpm-buster@sha256:4bc607d4aae0dfb96921cf079eba3d197c49c8307821371e861def73b0a69d6e
 
 SHELL [ "/bin/bash", "-exo", "pipefail", "-c" ]
 
diff --git a/1.6/Dockerfile.prod b/1.6/Dockerfile.prod
index 07fa7ca..c23d86c 100644
--- a/1.6/Dockerfile.prod
+++ b/1.6/Dockerfile.prod
@@ -1,4 +1,4 @@
-FROM php:7.3.28-fpm-buster@sha256:e7dd1db79543120565510fe4f01e944b2b6a85352fd80637728652455a63113d
+FROM php:7.4.19-fpm-buster@sha256:4bc607d4aae0dfb96921cf079eba3d197c49c8307821371e861def73b0a69d6e
 
 SHELL [ "/bin/bash", "-exo", "pipefail", "-c" ]