diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1ef3b2d..2c5664c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macOS-latest]
-        php-version: ['8.1']
+        php-version: ['8.2', '8.3']
     name: 'PHPUnit'
     steps:
       - name: Checkout
@@ -30,7 +30,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-version: ['8.1']
+        php-version: ['8.2', '8.3']
     name: 'Psalm'
     steps:
       - name: Checkout
@@ -48,7 +48,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-version: ['8.1']
+        php-version: ['8.2']
     name: 'CS'
     steps:
       - name: Checkout
diff --git a/.gitignore b/.gitignore
index e96516b..7330583 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 composer.lock
 vendor
 .phpunit.result.cache
+.phpunit.cache
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..f14dced
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,11 @@
+# Changelog
+
+## 3.1.0 - 2023-09-16
+
+### Added
+
+- Support for `innmind/immutable` `5`
+
+### Removed
+
+- Support for PHP `8.1`
diff --git a/composer.json b/composer.json
index 1ec2510..30dc0b2 100644
--- a/composer.json
+++ b/composer.json
@@ -15,9 +15,9 @@
         "issues": "http://github.com/Innmind/UrlTemplate/issues"
     },
     "require": {
-        "php": "~8.1",
+        "php": "~8.2",
         "innmind/url": "~4.1",
-        "innmind/immutable": "~4.3"
+        "innmind/immutable": "~4.3|~5.0"
     },
     "autoload": {
         "psr-4": {
@@ -30,9 +30,9 @@
         }
     },
     "require-dev": {
-        "phpunit/phpunit": "~9.0",
-        "vimeo/psalm": "~4.4",
-        "innmind/black-box": "^4.16",
+        "phpunit/phpunit": "~10.2",
+        "vimeo/psalm": "~5.12",
+        "innmind/black-box": "~5.5",
         "innmind/coding-standard": "~2.0"
     }
 }
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 51d31c5..034d8fd 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,6 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" colors="true" bootstrap="vendor/autoload.php" printerClass="Innmind\BlackBox\PHPUnit\ResultPrinterV9" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
-  <coverage>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" colors="true" bootstrap="vendor/autoload.php" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.3/phpunit.xsd" cacheDirectory=".phpunit.cache">
+  <extensions>
+    <bootstrap class="Innmind\BlackBox\PHPUnit\Extension">
+    </bootstrap>
+  </extensions>
+  <coverage/>
+  <testsuites>
+    <testsuite name="Test suite">
+      <directory>./tests</directory>
+    </testsuite>
+  </testsuites>
+  <source>
     <include>
       <directory>.</directory>
     </include>
@@ -8,10 +18,5 @@
       <directory>./tests</directory>
       <directory>./vendor</directory>
     </exclude>
-  </coverage>
-  <testsuites>
-    <testsuite name="Test suite">
-      <directory>./tests</directory>
-    </testsuite>
-  </testsuites>
+  </source>
 </phpunit>
diff --git a/psalm.xml b/psalm.xml
index 3240886..510148d 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -2,6 +2,8 @@
 <psalm
     errorLevel="1"
     resolveFromConfigFile="true"
+    findUnusedCode="false"
+    findUnusedBaselineEntry="true"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
diff --git a/src/Expression/Name.php b/src/Expression/Name.php
index 289dda4..fe8dd8b 100644
--- a/src/Expression/Name.php
+++ b/src/Expression/Name.php
@@ -85,7 +85,10 @@ public static function limit(
         Str $value,
         Expansion $expansion,
     ): Maybe {
-        /** @psalm-suppress ArgumentTypeCoercion Because of the non-empty-string */
+        /**
+         * @psalm-suppress ArgumentTypeCoercion Because of the non-empty-string
+         * @var Maybe<array{self, positive-int}>
+         */
         return Maybe::just($value)
             ->filter($expansion->matchesLimit(...))
             ->map($expansion->clean(...))
diff --git a/tests/Expression/Level4/CompositeTest.php b/tests/Expression/Level4/CompositeTest.php
index a57b5d9..b370291 100644
--- a/tests/Expression/Level4/CompositeTest.php
+++ b/tests/Expression/Level4/CompositeTest.php
@@ -167,7 +167,7 @@ public function testRegex()
         );
     }
 
-    public function cases(): array
+    public static function cases(): array
     {
         return [
             ['{var,hello}', 'value,Hello%20World%21'],
diff --git a/tests/ExpressionsTest.php b/tests/ExpressionsTest.php
index 0ffb298..8da5dd7 100644
--- a/tests/ExpressionsTest.php
+++ b/tests/ExpressionsTest.php
@@ -42,7 +42,7 @@ public function testReturnNothingWhenInvalidPattern()
         ));
     }
 
-    public function cases(): array
+    public static function cases(): array
     {
         return [
             ['{foo}', Level4::class],
diff --git a/tests/TemplateTest.php b/tests/TemplateTest.php
index c70004b..0840cde 100644
--- a/tests/TemplateTest.php
+++ b/tests/TemplateTest.php
@@ -422,7 +422,7 @@ public function testNoNeedToEscapeSpecialRegexCharactersInTheUrl()
         $this->assertFalse($template->matches(Url::of('/f')));
     }
 
-    public function cases(): array
+    public static function cases(): array
     {
         return [
             ['http://example.com{/list*}{?keys*}', 'http://example.com/red/green/blue?semi=%3B&dot=.&comma=%2C'],