diff --git a/composer.json b/composer.json
index d166fba..3e73b8e 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
     ],
     "license": "BSD-3-Clause",
     "require": {
-        "php": "^7.4 || ^8.0 || ~8.1.0",
+        "php": "~7.4.0 || ~8.0.0 || ~8.1.0",
         "fig/http-message-util": "^1.1",
         "mezzio/mezzio-router": "^3.1",
         "psr/container": "^1.0 || ^2.0",
diff --git a/composer.lock b/composer.lock
index 20baf5f..7bc1331 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "151c8e7d26e07e317c34ee028d079ef4",
+    "content-hash": "7c447975b02fb04f907e3bb7155ee95a",
     "packages": [
         {
             "name": "fig/http-message-util",
@@ -4492,7 +4492,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "^7.4 || ^8.0 || ~8.1.0"
+        "php": "~7.4.0 || ~8.0.0 || ~8.1.0"
     },
     "platform-dev": [],
     "platform-overrides": {