diff --git a/composer.json b/composer.json
index d677348b..49c88017 100644
--- a/composer.json
+++ b/composer.json
@@ -11,10 +11,10 @@
     "php": ">=7.1",
     "ext-grpc": "*",
     "ext-json": "*",
-    "laravel/framework": "5.5.*",
-    "illuminate/support": "5.5.*",
-    "illuminate/container": "5.5.*",
-    "illuminate/database": "5.5.*",
+    "laravel/framework": "^5.5",
+    "illuminate/support": "^5.5.",
+    "illuminate/container": "^5.5",
+    "illuminate/database": "^5.5",
     "google/cloud-spanner": "1.11.*",
     "grpc/grpc": "^1.15.0",
     "ramsey/uuid": "^3.7",