diff --git a/1.6/Dockerfile b/1.6/Dockerfile
index 9d1b3ad..82693eb 100644
--- a/1.6/Dockerfile
+++ b/1.6/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:7.3.28-fpm-buster@sha256:d38892103d2f76e3245a080875718d74414d6d7a57cfe7000a91f4aa668f870b
+FROM php:7.4.20-fpm-buster@sha256:08a0f6fa0f53cd163245949c55a4cc598f4160d4fd217b5406f2c5575752a8e3
 
 SHELL [ "/bin/bash", "-exo", "pipefail", "-c" ]
 
diff --git a/1.6/Dockerfile.prod b/1.6/Dockerfile.prod
index 99965d3..504618d 100644
--- a/1.6/Dockerfile.prod
+++ b/1.6/Dockerfile.prod
@@ -1,4 +1,4 @@
-FROM php:7.3.28-fpm-buster@sha256:d38892103d2f76e3245a080875718d74414d6d7a57cfe7000a91f4aa668f870b
+FROM php:7.4.20-fpm-buster@sha256:08a0f6fa0f53cd163245949c55a4cc598f4160d4fd217b5406f2c5575752a8e3
 
 SHELL [ "/bin/bash", "-exo", "pipefail", "-c" ]