diff --git a/composer.json b/composer.json
index 7ce303a097..5a38e50407 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
     "require-dev": {
         "brianium/paratest": "^7",
         "designsecurity/progpilot": "^1",
-        "mediawiki/mediawiki-codesniffer": "^51.0.0",
+        "mediawiki/mediawiki-codesniffer": "^52.0.0",
         "overtrue/phplint": "^9",
         "phan/phan": "^6",
         "phpstan/phpstan": "^2.1.32",
diff --git a/composer.lock b/composer.lock
index ce6468dd67..fb7dd1c196 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": "36e41024d2b53b55dbb8665419aed6c0",
+    "content-hash": "2bb2e9ae48aa5c0a678cb6998aa77042",
     "packages": [
         {
             "name": "mediawiki/oauthclient",
@@ -2175,25 +2175,25 @@
         },
         {
             "name": "mediawiki/mediawiki-codesniffer",
-            "version": "v51.0.0",
+            "version": "v52.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/wikimedia/mediawiki-tools-codesniffer.git",
-                "reference": "d9f3595b7e9c73b1f725b0074ac04670c707211e"
+                "reference": "bf16d45cb62ecd614e3d565e3b883a268aeba988"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/wikimedia/mediawiki-tools-codesniffer/zipball/d9f3595b7e9c73b1f725b0074ac04670c707211e",
-                "reference": "d9f3595b7e9c73b1f725b0074ac04670c707211e",
+                "url": "https://api.github.com/repos/wikimedia/mediawiki-tools-codesniffer/zipball/bf16d45cb62ecd614e3d565e3b883a268aeba988",
+                "reference": "bf16d45cb62ecd614e3d565e3b883a268aeba988",
                 "shasum": ""
             },
             "require": {
                 "composer/semver": "^3.4.2",
-                "composer/spdx-licenses": "~1.5.2 || ~1.6.0",
+                "composer/spdx-licenses": "~1.6.0",
                 "ext-mbstring": "*",
-                "php": ">=8.2.0",
+                "php": ">=8.3.0",
                 "phpcsstandards/phpcsextra": "1.5.0",
-                "squizlabs/php_codesniffer": "3.13.5"
+                "squizlabs/php_codesniffer": "3.13.6"
             },
             "require-dev": {
                 "ext-dom": "*",
@@ -2220,9 +2220,9 @@
                 "mediawiki"
             ],
             "support": {
-                "source": "https://github.com/wikimedia/mediawiki-tools-codesniffer/tree/v51.0.0"
+                "source": "https://github.com/wikimedia/mediawiki-tools-codesniffer/tree/v52.0.0"
             },
-            "time": "2026-05-03T06:29:24+00:00"
+            "time": "2026-08-06T12:11:22+00:00"
         },
         {
             "name": "myclabs/deep-copy",
@@ -5109,16 +5109,16 @@
         },
         {
             "name": "squizlabs/php_codesniffer",
-            "version": "3.13.5",
+            "version": "3.13.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPCSStandards/PHP_CodeSniffer.git",
-                "reference": "0ca86845ce43291e8f5692c7356fccf3bcf02bf4"
+                "reference": "4c378e1a528ea066890fc2397cbdd2f94eb2fc91"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/0ca86845ce43291e8f5692c7356fccf3bcf02bf4",
-                "reference": "0ca86845ce43291e8f5692c7356fccf3bcf02bf4",
+                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/4c378e1a528ea066890fc2397cbdd2f94eb2fc91",
+                "reference": "4c378e1a528ea066890fc2397cbdd2f94eb2fc91",
                 "shasum": ""
             },
             "require": {
@@ -5184,7 +5184,7 @@
                     "type": "thanks_dev"
                 }
             ],
-            "time": "2025-11-04T16:30:35+00:00"
+            "time": "2026-08-06T00:17:32+00:00"
         },
         {
             "name": "staabm/side-effects-detector",