diff --git a/composer.json b/composer.json
index 79381ac37..759d75a75 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
         "ext-json": "*"
     },
     "require-dev": {
-        "composer/composer": "^2.6.5",
+        "composer/composer": "^2.6.6",
         "phpunit/phpunit": "^7|^8|^9"
     },
     "extra": {
diff --git a/drainpipe-dev/composer.json b/drainpipe-dev/composer.json
index 31b9343ac..ff9908162 100644
--- a/drainpipe-dev/composer.json
+++ b/drainpipe-dev/composer.json
@@ -29,7 +29,7 @@
         "phpspec/prophecy-phpunit": "^2"
     },
     "require-dev": {
-        "composer/composer": "^2.6.5"
+        "composer/composer": "^2.6.6"
     },
     "bin": [
         "bin/drainpipe-twig-linter",