diff --git a/composer.lock b/composer.lock
index 6bcb7d9..4abcbca 100644
--- a/composer.lock
+++ b/composer.lock
@@ -209,16 +209,16 @@
         },
         {
             "name": "myclabs/php-enum",
-            "version": "1.8.0",
+            "version": "1.8.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/php-enum.git",
-                "reference": "46cf3d8498b095bd33727b13fd5707263af99421"
+                "reference": "55555d31a622b4bc9662664132a0533ae6ef47b1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/php-enum/zipball/46cf3d8498b095bd33727b13fd5707263af99421",
-                "reference": "46cf3d8498b095bd33727b13fd5707263af99421",
+                "url": "https://api.github.com/repos/myclabs/php-enum/zipball/55555d31a622b4bc9662664132a0533ae6ef47b1",
+                "reference": "55555d31a622b4bc9662664132a0533ae6ef47b1",
                 "shasum": ""
             },
             "require": {
@@ -228,7 +228,7 @@
             "require-dev": {
                 "phpunit/phpunit": "^9.5",
                 "squizlabs/php_codesniffer": "1.*",
-                "vimeo/psalm": "^4.5.1"
+                "vimeo/psalm": "^4.6.2"
             },
             "type": "library",
             "autoload": {
@@ -253,7 +253,7 @@
             ],
             "support": {
                 "issues": "https://github.com/myclabs/php-enum/issues",
-                "source": "https://github.com/myclabs/php-enum/tree/1.8.0"
+                "source": "https://github.com/myclabs/php-enum/tree/1.8.1"
             },
             "funding": [
                 {
@@ -265,7 +265,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-02-15T16:11:48+00:00"
+            "time": "2021-06-29T09:20:05+00:00"
         },
         {
             "name": "psr/http-message",