diff --git a/Dockerfile b/Dockerfile
index c57b8cc..dbda7b7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM composer@sha256:d374b2e1f715621e9d9929575d6b35b11cf4a6dc237d4a08f2e6d1611f534675 as composer
+FROM composer@sha256:e4d7757e0c7ae48d9ddc65c07215ce602cbdcc909dc0dd8e30626ffd865fc968 as composer
 # composer is pinned at a PHP 7 version
 
 WORKDIR /installing