diff --git a/composer.json b/composer.json
index d3e429c..7e5b9b9 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
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   "prefer-stable": true,
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-    "php": "^7.4.2 || ^8.0",
+    "php": "^7.4.2 || ^8.0 || ^8.1",
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     "aeon-php/sleep": ">=0.6.0",
diff --git a/composer.lock b/composer.lock
index 173232e..d86d9da 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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-    "content-hash": "9435c5ab9ba26a50795bf89411f2aa09",
+    "content-hash": "ee16ee311146c88c0ba17382ea5f0a6a",
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@@ -57,16 +57,16 @@
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-            "version": "1.0.2",
+            "version": "1.0.3",
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-                "reference": "ea868e56c813dcfb56b83700d8014ec6b06329ce"
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-                "reference": "ea868e56c813dcfb56b83700d8014ec6b06329ce",
+                "url": "https://api.github.com/repos/aeon-php/sleep/zipball/8070b7f08f99d5af1d52f0d7e127b094cfa38a29",
+                "reference": "8070b7f08f99d5af1d52f0d7e127b094cfa38a29",
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@@ -97,9 +97,9 @@
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-                "source": "https://github.com/aeon-php/sleep/tree/1.0.2"
+                "source": "https://github.com/aeon-php/sleep/tree/1.0.3"
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-            "time": "2022-01-04T08:45:32+00:00"
+            "time": "2022-01-06T11:14:18+00:00"
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@@ -578,16 +578,16 @@
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-            "version": "v1.23.0",
+            "version": "v1.24.0",
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-                "reference": "fba8933c384d6476ab14fb7b8526e5287ca7e010"
+                "reference": "cc5db0e22b3cb4111010e48785a97f670b350ca5"
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-                "reference": "fba8933c384d6476ab14fb7b8526e5287ca7e010",
+                "url": "https://api.github.com/repos/symfony/polyfill-php73/zipball/cc5db0e22b3cb4111010e48785a97f670b350ca5",
+                "reference": "cc5db0e22b3cb4111010e48785a97f670b350ca5",
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@@ -637,7 +637,7 @@
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-                "source": "https://github.com/symfony/polyfill-php73/tree/v1.23.0"
+                "source": "https://github.com/symfony/polyfill-php73/tree/v1.24.0"
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@@ -653,20 +653,20 @@
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                 }
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-            "time": "2021-02-19T12:13:01+00:00"
+            "time": "2021-06-05T21:20:04+00:00"
         },
         {
             "name": "symfony/polyfill-php80",
-            "version": "v1.23.1",
+            "version": "v1.24.0",
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                 "url": "https://github.com/symfony/polyfill-php80.git",
-                "reference": "1100343ed1a92e3a38f9ae122fc0eb21602547be"
+                "reference": "57b712b08eddb97c762a8caa32c84e037892d2e9"
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-                "reference": "1100343ed1a92e3a38f9ae122fc0eb21602547be",
+                "url": "https://api.github.com/repos/symfony/polyfill-php80/zipball/57b712b08eddb97c762a8caa32c84e037892d2e9",
+                "reference": "57b712b08eddb97c762a8caa32c84e037892d2e9",
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@@ -720,7 +720,7 @@
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-                "source": "https://github.com/symfony/polyfill-php80/tree/v1.23.1"
+                "source": "https://github.com/symfony/polyfill-php80/tree/v1.24.0"
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@@ -736,7 +736,7 @@
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-            "time": "2021-07-28T13:41:28+00:00"
+            "time": "2021-09-13T13:58:33+00:00"
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@@ -901,9 +901,9 @@
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     "prefer-lowest": false,
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-        "php": "^7.4.2 || ^8.0",
+        "php": "^7.4.2 || ^8.0 || ^8.1",
         "ext-json": "*"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.1.0"
+    "plugin-api-version": "2.2.0"
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