diff --git a/composer.json b/composer.json
index 87b6b08..4a8674a 100644
--- a/composer.json
+++ b/composer.json
@@ -1,28 +1,28 @@
 {
-    "name": "nextcloud/files_lock",
-    "require-dev": {
-        "phpunit/phpunit": "^9.5",
-        "nextcloud/coding-standard": "^1.0",
-        "psalm/phar": "^5.2",
-        "sabre/dav": "^4.3",
-        "nextcloud/ocp": "dev-master"
-    },
+		"name": "nextcloud/files_lock",
+		"require-dev": {
+				"phpunit/phpunit": "^9.5",
+				"nextcloud/coding-standard": "^1.2",
+				"psalm/phar": "^5.25",
+				"sabre/dav": "^4.6",
+				"nextcloud/ocp": "dev-master"
+		},
 	"config": {
 		"platform": {
-			"php": "8.0"
+			"php": "8.1"
 		}
 	},
-    "license": "AGPL",
-    "require": {
-      "php": "^8.0"
-    },
-    "scripts": {
-      "lint": "find . -name \\*.php -not -path './vendor/*' -print0 | xargs -0 -n1 php -l",
-      "cs:check": "php-cs-fixer fix --dry-run --diff",
-      "cs:fix": "php-cs-fixer fix",
-      "psalm": "psalm.phar",
-      "test:unit": "phpunit -c tests/phpunit.xml"
-    },
+		"license": "AGPL",
+		"require": {
+			"php": "^8.1"
+		},
+		"scripts": {
+			"lint": "find . -name \\*.php -not -path './vendor/*' -print0 | xargs -0 -n1 php -l",
+			"cs:check": "php-cs-fixer fix --dry-run --diff",
+			"cs:fix": "php-cs-fixer fix",
+			"psalm": "psalm.phar",
+			"test:unit": "phpunit -c tests/phpunit.xml"
+		},
 	"autoload-dev": {
 		"psr-4": {
 			"OCP\\": "vendor/nextcloud/ocp/OCP"
diff --git a/composer.lock b/composer.lock
index 5dee6b5..a58df49 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,35 +4,35 @@
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     ],
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+    "content-hash": "02c0098bcdfd32c548dd92279f2ef880",
     "packages": [],
     "packages-dev": [
         {
             "name": "doctrine/instantiator",
-            "version": "1.5.0",
+            "version": "2.0.0",
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                 "url": "https://github.com/doctrine/instantiator.git",
-                "reference": "0a0fa9780f5d4e507415a065172d26a98d02047b"
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-                "reference": "0a0fa9780f5d4e507415a065172d26a98d02047b",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/c6222283fa3f4ac679f8b9ced9a4e23f163e80d0",
+                "reference": "c6222283fa3f4ac679f8b9ced9a4e23f163e80d0",
                 "shasum": ""
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             "require": {
-                "php": "^7.1 || ^8.0"
+                "php": "^8.1"
             },
             "require-dev": {
-                "doctrine/coding-standard": "^9 || ^11",
+                "doctrine/coding-standard": "^11",
                 "ext-pdo": "*",
                 "ext-phar": "*",
-                "phpbench/phpbench": "^0.16 || ^1",
-                "phpstan/phpstan": "^1.4",
-                "phpstan/phpstan-phpunit": "^1",
-                "phpunit/phpunit": "^7.5 || ^8.5 || ^9.5",
-                "vimeo/psalm": "^4.30 || ^5.4"
+                "phpbench/phpbench": "^1.2",
+                "phpstan/phpstan": "^1.9.4",
+                "phpstan/phpstan-phpunit": "^1.3",
+                "phpunit/phpunit": "^9.5.27",
+                "vimeo/psalm": "^5.4"
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@@ -59,7 +59,7 @@
             ],
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-                "source": "https://github.com/doctrine/instantiator/tree/1.5.0"
+                "source": "https://github.com/doctrine/instantiator/tree/2.0.0"
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@@ -75,20 +75,20 @@
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-            "time": "2022-12-30T00:15:36+00:00"
+            "time": "2022-12-30T00:23:10+00:00"
         },
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             "name": "myclabs/deep-copy",
-            "version": "1.11.1",
+            "version": "1.12.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "7284c22080590fb39f2ffa3e9057f10a4ddd0e0c"
+                "reference": "3a6b9a42cd8f8771bd4295d13e1423fa7f3d942c"
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-                "reference": "7284c22080590fb39f2ffa3e9057f10a4ddd0e0c",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/3a6b9a42cd8f8771bd4295d13e1423fa7f3d942c",
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@@ -96,11 +96,12 @@
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-                "doctrine/common": "<2.13.3 || >=3,<3.2.2"
+                "doctrine/common": "<2.13.3 || >=3 <3.2.2"
             },
             "require-dev": {
                 "doctrine/collections": "^1.6.8",
                 "doctrine/common": "^2.13.3 || ^3.2.2",
+                "phpspec/prophecy": "^1.10",
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@@ -126,7 +127,7 @@
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                 "issues": "https://github.com/myclabs/DeepCopy/issues",
-                "source": "https://github.com/myclabs/DeepCopy/tree/1.11.1"
+                "source": "https://github.com/myclabs/DeepCopy/tree/1.12.0"
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@@ -134,7 +135,7 @@
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-            "time": "2023-03-08T13:26:56+00:00"
+            "time": "2024-06-12T14:39:25+00:00"
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@@ -183,12 +184,12 @@
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                 "url": "https://github.com/nextcloud-deps/ocp.git",
-                "reference": "161f383f539a05400c7cb4671c2fedaf0f0c17eb"
+                "reference": "130396c54bc430193a77bced3025a315e9560396"
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-                "reference": "161f383f539a05400c7cb4671c2fedaf0f0c17eb",
+                "url": "https://api.github.com/repos/nextcloud-deps/ocp/zipball/130396c54bc430193a77bced3025a315e9560396",
+                "reference": "130396c54bc430193a77bced3025a315e9560396",
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@@ -220,20 +221,20 @@
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                 "source": "https://github.com/nextcloud-deps/ocp/tree/master"
             },
-            "time": "2024-08-08T00:38:08+00:00"
+            "time": "2024-08-13T00:39:06+00:00"
         },
         {
             "name": "nikic/php-parser",
-            "version": "v5.0.2",
+            "version": "v5.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nikic/PHP-Parser.git",
-                "reference": "139676794dc1e9231bf7bcd123cfc0c99182cb13"
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-                "reference": "139676794dc1e9231bf7bcd123cfc0c99182cb13",
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@@ -244,7 +245,7 @@
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-                "phpunit/phpunit": "^7.0 || ^8.0 || ^9.0"
+                "phpunit/phpunit": "^9.0"
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@@ -276,9 +277,9 @@
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                 "issues": "https://github.com/nikic/PHP-Parser/issues",
-                "source": "https://github.com/nikic/PHP-Parser/tree/v5.0.2"
+                "source": "https://github.com/nikic/PHP-Parser/tree/v5.1.0"
             },
-            "time": "2024-03-05T20:51:40+00:00"
+            "time": "2024-07-01T20:03:41+00:00"
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@@ -400,16 +401,16 @@
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-            "version": "v3.56.1",
+            "version": "v3.62.0",
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                 "url": "https://github.com/PHP-CS-Fixer/shim.git",
-                "reference": "98c0b531f2e7a43a4da2449498398f484b29df50"
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-                "reference": "98c0b531f2e7a43a4da2449498398f484b29df50",
+                "url": "https://api.github.com/repos/PHP-CS-Fixer/shim/zipball/7a91d5ce45c486f5b445d95901228507a02f60ae",
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@@ -446,9 +447,9 @@
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-                "source": "https://github.com/PHP-CS-Fixer/shim/tree/v3.56.1"
+                "source": "https://github.com/PHP-CS-Fixer/shim/tree/v3.62.0"
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-            "time": "2024-05-10T11:31:44+00:00"
+            "time": "2024-08-07T17:03:46+00:00"
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@@ -771,45 +772,45 @@
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-            "version": "9.6.19",
+            "version": "9.6.20",
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                 "ext-xml": "*",
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-                "myclabs/deep-copy": "^1.10.1",
-                "phar-io/manifest": "^2.0.3",
-                "phar-io/version": "^3.0.2",
+                "myclabs/deep-copy": "^1.12.0",
+                "phar-io/manifest": "^2.0.4",
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-                "phpunit/php-file-iterator": "^3.0.5",
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-                "phpunit/php-timer": "^5.0.2",
-                "sebastian/cli-parser": "^1.0.1",
-                "sebastian/code-unit": "^1.0.6",
+                "phpunit/php-text-template": "^2.0.4",
+                "phpunit/php-timer": "^5.0.3",
+                "sebastian/cli-parser": "^1.0.2",
+                "sebastian/code-unit": "^1.0.8",
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-                "sebastian/object-enumerator": "^4.0.3",
-                "sebastian/resource-operations": "^3.0.3",
-                "sebastian/type": "^3.2",
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+                "sebastian/environment": "^5.1.5",
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+                "sebastian/object-enumerator": "^4.0.4",
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@@ -854,7 +855,7 @@
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-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.19"
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@@ -870,7 +871,7 @@
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@@ -1193,16 +1194,16 @@
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@@ -1211,7 +1212,7 @@
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@@ -1255,20 +1256,20 @@
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-            "time": "2021-11-04T06:51:17+00:00"
+            "time": "2024-07-26T05:09:47+00:00"
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@@ -1282,7 +1283,7 @@
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@@ -1318,7 +1319,7 @@
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@@ -1382,16 +1383,16 @@
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@@ -1482,20 +1483,20 @@
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@@ -1509,7 +1510,7 @@
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@@ -1551,7 +1552,7 @@
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-            "time": "2024-04-18T10:15:43+00:00"
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@@ -2575,11 +2576,11 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "^8.0"
+        "php": "^8.1"
     },
     "platform-dev": [],
     "platform-overrides": {
-        "php": "8.0"
+        "php": "8.1"
     },
     "plugin-api-version": "2.6.0"
 }
diff --git a/psalm.xml b/psalm.xml
index a51987c..703c00e 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -4,12 +4,12 @@
   - SPDX-License-Identifier: AGPL-3.0-or-later
 -->
 <psalm
-		errorLevel="4"
-		resolveFromConfigFile="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"
-		errorBaseline="tests/psalm-baseline.xml"
+	errorLevel="4"
+	resolveFromConfigFile="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"
+	errorBaseline="tests/psalm-baseline.xml"
 >
 	<stubs>
 		<file name="tests/stub.phpstub" preloadClasses="true"/>