diff --git a/.docker/Dockerfile b/.docker/Dockerfile
index 3716a63..febf228 100755
--- a/.docker/Dockerfile
+++ b/.docker/Dockerfile
@@ -1,7 +1,7 @@
 #----------------------------------------------------------------------
 # Download vendor from composer.json in dedicated layer
 #----------------------------------------------------------------------
-FROM composer:2.3 as vendor
+FROM composer:2.6 as vendor
 
 RUN mkdir -p /opt/validator-api
 WORKDIR /opt/validator-api