diff --git a/01-simple-application/web-application/Dockerfile b/01-simple-application/web-application/Dockerfile
index 6cff30c..f44b037 100644
--- a/01-simple-application/web-application/Dockerfile
+++ b/01-simple-application/web-application/Dockerfile
@@ -1,4 +1,4 @@
-FROM composer:2.0.11 AS composer
+FROM composer:2.1.8 AS composer
 
 COPY composer.* /app/