diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bbf4965c..72631e76 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -46,7 +46,7 @@ jobs:
       - name: Set up PHP
         uses: shivammathur/setup-php@bf6b4fbd49ca58e4608c9c89fba0b8d90bd2a39f # v2
         with:
-          php-version: '8.4'
+          php-version: '8.5'
           extensions: ctype, json, mbstring
           tools: composer
 
diff --git a/.github/workflows/integration-tests.yml b/.github/workflows/integration-tests.yml
index 4e319a02..e24fea4d 100644
--- a/.github/workflows/integration-tests.yml
+++ b/.github/workflows/integration-tests.yml
@@ -41,9 +41,9 @@ jobs:
     name: "PostgreSQL ${{ matrix.postgres }} + PostGIS ${{ matrix.postgis }} + PHP ${{ matrix.php }}"
 
     strategy:
-      fail-fast: false
+      fail-fast: ${{ github.event_name == 'pull_request' }}
       matrix:
-        php: ['8.1', '8.2', '8.3', '8.4']
+        php: ['8.1', '8.2', '8.3', '8.4', '8.5']
         postgis: ['3.4', '3.5', '3.6']
         postgres: ['16', '17', '18']
         exclude:
@@ -57,7 +57,7 @@ jobs:
             postgis: '3.5'
         include:
           # Code coverage on the latest stable combination
-          - php: '8.4'
+          - php: '8.5'
             postgres: '18'
             postgis: '3.6'
             calculate-code-coverage: true
@@ -92,15 +92,20 @@ jobs:
       - name: Validate composer.json and composer.lock
         run: composer validate --strict
 
+      - name: Get composer cache directory
+        id: composer-cache-dir
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
       - name: Cache Composer packages
-        id: composer-cache
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with:
-          path: vendor
-          key: ${{ runner.os }}-php-${{ matrix.php }}-pg-${{ matrix.postgres }}-${{ hashFiles('**/composer.lock') }}
+          path: |
+            ${{ steps.composer-cache-dir.outputs.dir }}
+            vendor
+          key: ${{ runner.os }}-php-${{ matrix.php }}-composer-${{ hashFiles('**/composer.lock') }}
           restore-keys: |
-            ${{ runner.os }}-php-${{ matrix.php }}-pg-${{ matrix.postgres }}-
-            ${{ runner.os }}-php-${{ matrix.php }}-
+            ${{ runner.os }}-php-${{ matrix.php }}-composer-
+            ${{ runner.os }}-composer-
 
       - name: Install dependencies
         run: composer install --prefer-dist --no-interaction --no-progress
@@ -112,22 +117,7 @@ jobs:
 
       - name: Verify PostgreSQL connection and setup
         run: |
-          echo "Checking PostgreSQL version:"
-          PGPASSWORD=postgres psql -h localhost -U postgres -d postgres_doctrine_test -c "SELECT version();"
-
-          echo "\nChecking PostgreSQL configuration:"
-          PGPASSWORD=postgres psql -h localhost -U postgres -d postgres_doctrine_test -c "SHOW server_version;"
-          PGPASSWORD=postgres psql -h localhost -U postgres -d postgres_doctrine_test -c "SHOW max_connections;"
-          PGPASSWORD=postgres psql -h localhost -U postgres -d postgres_doctrine_test -c "SHOW shared_buffers;"
-
-          echo "\nCreating test schema:"
-          PGPASSWORD=postgres psql -h localhost -U postgres -d postgres_doctrine_test -c "CREATE SCHEMA IF NOT EXISTS test;"
-
-          echo "\nListing available PostgreSQL extensions:"
-          PGPASSWORD=postgres psql -h localhost -U postgres -d postgres_doctrine_test -c "SELECT * FROM pg_available_extensions;"
-
-          echo "\nVerifying PostGIS installation:"
-          PGPASSWORD=postgres psql -h localhost -U postgres -d postgres_doctrine_test -c "SELECT PostGIS_Version();"
+          PGPASSWORD=postgres psql -h localhost -U postgres -d postgres_doctrine_test -c "CREATE SCHEMA IF NOT EXISTS test; SELECT PostGIS_Version();"
 
       - name: Run integration test suite
         run: |
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 1d56c7d7..73dcf4c1 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -41,16 +41,16 @@ jobs:
     name: "PHP ${{ matrix.php }} + Doctrine ORM ${{ matrix.doctrine-orm }} + Doctrine Lexer ${{ matrix.doctrine-lexer }}"
 
     strategy:
-      fail-fast: false
+      fail-fast: ${{ github.event_name == 'pull_request' }}
       matrix:
-        php: ['8.1', '8.2', '8.3', '8.4']
+        php: ['8.1', '8.2', '8.3', '8.4', '8.5']
         doctrine-lexer: ['2.1', '3.0', 'latest']
         doctrine-orm: ['2.14', '2.18', '3.0', 'latest']
         include:
           - php: '8.1'
             doctrine-orm: '2.14'
             doctrine-lexer: '1.2'
-          - php: '8.4' # Run coverage report only based on the latest dependencies
+          - php: '8.5' # Run coverage report only based on the latest dependencies
             doctrine-lexer: 'latest'
             doctrine-orm: 'latest'
             calculate-code-coverage: true
@@ -71,11 +71,16 @@ jobs:
           extensions: ctype, json, mbstring
           tools: composer
 
+      - name: Get composer cache directory
+        id: composer-cache-dir
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
       - name: Cache Composer packages
-        id: composer-cache
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
         with:
-          path: vendor
+          path: |
+            ${{ steps.composer-cache-dir.outputs.dir }}
+            vendor
           key: ${{ runner.os }}-php-${{ matrix.php }}-orm-${{ matrix.doctrine-orm }}-lexer-${{ matrix.doctrine-lexer }}-${{ hashFiles('**/composer.lock') }}
           restore-keys: |
             ${{ runner.os }}-php-${{ matrix.php }}-orm-${{ matrix.doctrine-orm }}-lexer-${{ matrix.doctrine-lexer }}-
diff --git a/ci/php-cs-fixer/config.php b/ci/php-cs-fixer/config.php
index 59dc9edf..ddbe3247 100644
--- a/ci/php-cs-fixer/config.php
+++ b/ci/php-cs-fixer/config.php
@@ -18,7 +18,7 @@
     ->setRules(
         [
             '@PSR2' => true,
-            '@PHP71Migration' => true,
+            '@PHP7x1Migration' => true,
             '@DoctrineAnnotation' => true,
             '@PhpCsFixer' => true,
             'align_multiline_comment' => false,
diff --git a/composer.json b/composer.json
index a7d5a4e3..8792d975 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,7 @@
     },
 
     "require": {
-        "php": "^8.1",
+        "php": "^8.1 <8.6",
         "ext-ctype": "*",
         "ext-json": "*",
         "ext-mbstring": "*",
@@ -57,7 +57,7 @@
         "symfony/cache": "^6.4||^7.0"
     },
     "suggest": {
-        "php": "^8.3",
+        "php": "^8.4",
         "doctrine/orm": "~2.14||~3.0"
     },
 
diff --git a/docs/CONTRIBUTING.md b/docs/CONTRIBUTING.md
index f301a692..8d64f2b3 100644
--- a/docs/CONTRIBUTING.md
+++ b/docs/CONTRIBUTING.md
@@ -128,8 +128,8 @@ Using local-only plaintext secrets here is acceptable.
 For example, this file:
 
 - Install [Harlequin](https://harlequin.sh/) database TUI.
-- Set PHP version to 8.4.
-- Change PostgreSQL related environment variables.
+- Set PHP version to 8.5.
+- Change PostgreSQL-related environment variables.
 
 ```nix
 # devenv.local.nix
@@ -139,7 +139,7 @@ For example, this file:
   packages = with pkgs; [ harlequin ];
 
   # https://devenv.sh/languages/
-  languages.php.version = "8.4";
+  languages.php.version = "8.5";
 
   # https://devenv.sh/basics/
   env = {
diff --git a/src/MartinGeorgiev/Doctrine/DBAL/Types/BaseIntegerArray.php b/src/MartinGeorgiev/Doctrine/DBAL/Types/BaseIntegerArray.php
index e8eef5e0..fa4779cf 100644
--- a/src/MartinGeorgiev/Doctrine/DBAL/Types/BaseIntegerArray.php
+++ b/src/MartinGeorgiev/Doctrine/DBAL/Types/BaseIntegerArray.php
@@ -44,8 +44,7 @@ private function throwIfInvalidArrayItemForDatabase(mixed $item): void
             throw InvalidIntegerArrayItemForDatabaseException::doesNotMatchRegex($item);
         }
 
-        $doesNotFitIntoPHPInteger = $stringValue !== (string) (int) $stringValue;
-        if ($doesNotFitIntoPHPInteger) {
+        if (!$this->fitsInPHPInteger($stringValue)) {
             throw InvalidIntegerArrayItemForDatabaseException::isOutOfRange($item);
         }
 
@@ -75,8 +74,7 @@ public function transformArrayItemForPHP(mixed $item): ?int
             throw InvalidIntegerArrayItemForPHPException::forValueThatIsNotAValidPHPInteger($item, static::TYPE_NAME);
         }
 
-        $doesNotFitIntoPHPInteger = $stringValue !== (string) (int) $stringValue;
-        if ($doesNotFitIntoPHPInteger) {
+        if (!$this->fitsInPHPInteger($stringValue)) {
             throw InvalidIntegerArrayItemForPHPException::forValueOutOfRangeInPHP($item, static::TYPE_NAME);
         }
 
@@ -88,4 +86,9 @@ public function transformArrayItemForPHP(mixed $item): ?int
 
         return $integerValue;
     }
+
+    private function fitsInPHPInteger(string $value): bool
+    {
+        return \filter_var($value, \FILTER_VALIDATE_INT) !== false;
+    }
 }
diff --git a/src/MartinGeorgiev/Doctrine/DBAL/Types/SpatialDataArray.php b/src/MartinGeorgiev/Doctrine/DBAL/Types/SpatialDataArray.php
index da8bf615..9b0275d3 100644
--- a/src/MartinGeorgiev/Doctrine/DBAL/Types/SpatialDataArray.php
+++ b/src/MartinGeorgiev/Doctrine/DBAL/Types/SpatialDataArray.php
@@ -200,7 +200,7 @@ private function parseUnquotedWktArray(string $content): array
             $wktItems[] = $currentWktItem;
         }
 
-        return \array_map('trim', $wktItems);
+        return \array_map(trim(...), $wktItems);
     }
 
     public function isValidArrayItemForDatabase(mixed $item): bool
diff --git a/src/MartinGeorgiev/Utils/PHPArrayToPostgresValueTransformer.php b/src/MartinGeorgiev/Utils/PHPArrayToPostgresValueTransformer.php
index caa540e5..9aa4831b 100644
--- a/src/MartinGeorgiev/Utils/PHPArrayToPostgresValueTransformer.php
+++ b/src/MartinGeorgiev/Utils/PHPArrayToPostgresValueTransformer.php
@@ -30,7 +30,7 @@ public static function transformToPostgresTextArray(array $phpArray): string
             return self::POSTGRESQL_EMPTY_ARRAY;
         }
 
-        if (\array_filter($phpArray, 'is_array')) {
+        if (\array_filter($phpArray, is_array(...))) {
             throw InvalidArrayFormatException::multiDimensionalArrayNotSupported();
         }
 
diff --git a/tests/Unit/MartinGeorgiev/Utils/PHPArrayToPostgresValueTransformerTest.php b/tests/Unit/MartinGeorgiev/Utils/PHPArrayToPostgresValueTransformerTest.php
index d3371d12..6ad90acb 100644
--- a/tests/Unit/MartinGeorgiev/Utils/PHPArrayToPostgresValueTransformerTest.php
+++ b/tests/Unit/MartinGeorgiev/Utils/PHPArrayToPostgresValueTransformerTest.php
@@ -260,6 +260,5 @@ public function can_transform_array_with_gd_resource(): void
         $resource = \imagecreatetruecolor(1, 1);
         $result = PHPArrayToPostgresValueTransformer::transformToPostgresTextArray([$resource]);
         $this->assertStringContainsString('GdImage', $result);
-        \imagedestroy($resource);
     }
 }