diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index b44b2f19..cfe42e13 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -16,6 +16,7 @@ jobs:
           - "locked"
         php-version:
           - "8.0"
+          - "8.1"
         operating-system:
           - "ubuntu-latest"
 
diff --git a/.github/workflows/coding-standards.yml b/.github/workflows/coding-standards.yml
index c28008ce..f2372129 100644
--- a/.github/workflows/coding-standards.yml
+++ b/.github/workflows/coding-standards.yml
@@ -16,6 +16,7 @@ jobs:
           - "locked"
         php-version:
           - "8.0"
+          - "8.1"
         operating-system:
           - "ubuntu-latest"
 
diff --git a/.github/workflows/demo-scripts.yml b/.github/workflows/demo-scripts.yml
index 175ec19e..ed3cc4a3 100644
--- a/.github/workflows/demo-scripts.yml
+++ b/.github/workflows/demo-scripts.yml
@@ -16,6 +16,7 @@ jobs:
           - "locked"
         php-version:
           - "8.0"
+          - "8.1"
         operating-system:
           - "ubuntu-latest"
 
diff --git a/.github/workflows/mutation-tests.yml b/.github/workflows/mutation-tests.yml
index aef97966..50989698 100644
--- a/.github/workflows/mutation-tests.yml
+++ b/.github/workflows/mutation-tests.yml
@@ -16,6 +16,7 @@ jobs:
           - "locked"
         php-version:
           - "8.0"
+          - "8.1"
         operating-system:
           - "ubuntu-latest"
 
diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index cbb61770..ee7a6014 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -18,6 +18,7 @@ jobs:
           - "locked"
         php-version:
           - "8.0"
+          - "8.1"
         operating-system:
           - "ubuntu-latest"
         include:
diff --git a/.github/workflows/psalm.yml b/.github/workflows/psalm.yml
index 138ccdc8..2647e505 100644
--- a/.github/workflows/psalm.yml
+++ b/.github/workflows/psalm.yml
@@ -16,6 +16,7 @@ jobs:
           - "locked"
         php-version:
           - "8.0"
+          - "8.1"
         operating-system:
           - "ubuntu-latest"
 
diff --git a/.github/workflows/xulieta.yml b/.github/workflows/xulieta.yml
index d564295b..d360f693 100644
--- a/.github/workflows/xulieta.yml
+++ b/.github/workflows/xulieta.yml
@@ -16,6 +16,7 @@ jobs:
           - "locked"
         php-version:
           - "8.0"
+          - "8.1"
         operating-system:
           - "ubuntu-latest"
 
diff --git a/composer.json b/composer.json
index 279f735c..43379397 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         }
     ],
     "require": {
-        "php":                       "~8.0.0",
+        "php":                       "~8.0.0 || ~8.1.0",
         "composer-runtime-api":      "^2.1.0",
         "laminas/laminas-code":      "^4.4.2",
         "webimpress/safe-writer":    "^2.2.0"
diff --git a/composer.lock b/composer.lock
index cec4ae8d..196d1ad6 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": "da7e8e29fd166baf1cd0f010bacd1478",
+    "content-hash": "c6077e3749b74c31dc9ba7baab837d51",
     "packages": [
         {
             "name": "laminas/laminas-code",
@@ -6107,6 +6107,7 @@
                 "issues": "https://github.com/webmozart/path-util/issues",
                 "source": "https://github.com/webmozart/path-util/tree/2.3.0"
             },
+            "abandoned": "symfony/filesystem",
             "time": "2015-12-17T08:42:14+00:00"
         }
     ],
@@ -6116,7 +6117,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "~8.0.0",
+        "php": "~8.0.0 || ~8.0.0",
         "composer-runtime-api": "^2.1.0"
     },
     "platform-dev": {