diff --git a/Dockerfile b/Dockerfile
index 51eee56..ba1201b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM composer:2.2.1 as builder
+FROM composer:2.2.2 as builder
 
 COPY . /opt/phpdoc
 WORKDIR /opt/phpdoc