diff --git a/1.6/Dockerfile b/1.6/Dockerfile
index 5e5016f..89cafa0 100644
--- a/1.6/Dockerfile
+++ b/1.6/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:7.3.27-fpm-buster@sha256:3602ee5f10729b2f60186db3b174e8c283c9038ab8e4e308441cfbcc8368b45c
+FROM php:7.4.15-fpm-buster@sha256:241d45cf891fdbc4d891788f31a199cb217f8374142d105de59588e386f577a7
 
 SHELL [ "/bin/bash", "-exo", "pipefail", "-c" ]
 
diff --git a/1.6/Dockerfile.prod b/1.6/Dockerfile.prod
index b88066c..cdad6a4 100644
--- a/1.6/Dockerfile.prod
+++ b/1.6/Dockerfile.prod
@@ -1,4 +1,4 @@
-FROM php:7.3.27-fpm-buster@sha256:3602ee5f10729b2f60186db3b174e8c283c9038ab8e4e308441cfbcc8368b45c
+FROM php:7.4.15-fpm-buster@sha256:241d45cf891fdbc4d891788f31a199cb217f8374142d105de59588e386f577a7
 
 SHELL [ "/bin/bash", "-exo", "pipefail", "-c" ]