diff --git a/composer.json b/composer.json
index 5edc9a03c5a5..2aeb59366076 100644
--- a/composer.json
+++ b/composer.json
@@ -38,7 +38,7 @@
         "coconutcraig/laravel-postmark": "^2.10",
         "composer/composer": "^2",
         "czproject/git-php": "^3.17",
-        "dacastro4/laravel-gmail": "^5.1",
+        "dacastro4/laravel-gmail": "5.1",
         "doctrine/dbal": "^2.10",
         "fideloper/proxy": "^4.2",
         "fzaninotto/faker": "^1.4",