diff --git a/Makefile b/Makefile
index 81f8617..96ccd27 100644
--- a/Makefile
+++ b/Makefile
@@ -35,4 +35,4 @@ show-reports:
 
 clean:
 	@sudo chown -R ${USER}:${USER} ${PWD}
-	@rm -rf report vendor .phpunit.cache .lock
+	@rm -rf report vendor .phpunit.cache *.lock
diff --git a/composer.json b/composer.json
index 1cb043c..94fd469 100644
--- a/composer.json
+++ b/composer.json
@@ -43,7 +43,7 @@
     },
     "require": {
         "php": "^8.3",
-        "tiny-blocks/collection": "^1.8"
+        "tiny-blocks/collection": "1.8.0"
     },
     "require-dev": {
         "phpmd/phpmd": "^2.15",