diff --git a/composer.json b/composer.json
index 6467fc1c..a8f0b0d6 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
     "require": {
         "php": ">=7.0.0",
         "erusev/parsedown": "^1.6",
-        "illuminate/container": "^5.*",
+        "illuminate/container": "5.5.*",
         "psr/container": "^1.0",
         "psr/log": "^1.0",
         "symfony/http-foundation": "^3.3",