diff --git a/apps/client/package.json b/apps/client/package.json
index 4cf3fda988..f41a959e96 100644
--- a/apps/client/package.json
+++ b/apps/client/package.json
@@ -89,7 +89,7 @@
     "happy-dom": "20.9.0",
     "lightningcss": "1.32.0",
     "script-loader": "0.7.2",
-    "stylelint": "17.8.0",
+    "stylelint": "17.9.0",
     "vite-plugin-static-copy": "4.1.0"
   }
 }
diff --git a/packages/ckeditor5-admonition/package.json b/packages/ckeditor5-admonition/package.json
index 43df2f8eb5..0cd943371a 100644
--- a/packages/ckeditor5-admonition/package.json
+++ b/packages/ckeditor5-admonition/package.json
@@ -25,7 +25,7 @@
     "ckeditor5": "48.0.1",
     "eslint": "10.2.1",
     "eslint-config-ckeditor5": ">=9.1.0",
-    "stylelint": "17.8.0",
+    "stylelint": "17.9.0",
     "stylelint-config-ckeditor5": ">=9.1.0",
     "typescript": "6.0.3",
     "vite-plugin-svgo": "2.0.0",
diff --git a/packages/ckeditor5-footnotes/package.json b/packages/ckeditor5-footnotes/package.json
index db314142bd..906219189e 100644
--- a/packages/ckeditor5-footnotes/package.json
+++ b/packages/ckeditor5-footnotes/package.json
@@ -26,7 +26,7 @@
     "ckeditor5": "48.0.1",
     "eslint": "10.2.1",
     "eslint-config-ckeditor5": ">=9.1.0",
-    "stylelint": "17.8.0",
+    "stylelint": "17.9.0",
     "stylelint-config-ckeditor5": ">=9.1.0",
     "typescript": "6.0.3",
     "vite-plugin-svgo": "2.0.0",
diff --git a/packages/ckeditor5-keyboard-marker/package.json b/packages/ckeditor5-keyboard-marker/package.json
index 934956eb7e..5e75b8a490 100644
--- a/packages/ckeditor5-keyboard-marker/package.json
+++ b/packages/ckeditor5-keyboard-marker/package.json
@@ -28,7 +28,7 @@
     "ckeditor5": "48.0.1",
     "eslint": "10.2.1",
     "eslint-config-ckeditor5": ">=9.1.0",
-    "stylelint": "17.8.0",
+    "stylelint": "17.9.0",
     "stylelint-config-ckeditor5": ">=9.1.0",
     "typescript": "6.0.3",
     "vite-plugin-svgo": "2.0.0",
diff --git a/packages/ckeditor5-math/package.json b/packages/ckeditor5-math/package.json
index ea18cf9570..2fb6f61be3 100644
--- a/packages/ckeditor5-math/package.json
+++ b/packages/ckeditor5-math/package.json
@@ -28,7 +28,7 @@
     "ckeditor5": "48.0.1",
     "eslint": "10.2.1",
     "eslint-config-ckeditor5": ">=9.1.0",
-    "stylelint": "17.8.0",
+    "stylelint": "17.9.0",
     "stylelint-config-ckeditor5": ">=9.1.0",
     "typescript": "6.0.3",
     "vite-plugin-svgo": "2.0.0",
diff --git a/packages/ckeditor5-mermaid/package.json b/packages/ckeditor5-mermaid/package.json
index 1ba639c4f2..efb217f8ec 100644
--- a/packages/ckeditor5-mermaid/package.json
+++ b/packages/ckeditor5-mermaid/package.json
@@ -28,7 +28,7 @@
     "ckeditor5": "48.0.1",
     "eslint": "10.2.1",
     "eslint-config-ckeditor5": ">=9.1.0",
-    "stylelint": "17.8.0",
+    "stylelint": "17.9.0",
     "stylelint-config-ckeditor5": ">=9.1.0",
     "typescript": "6.0.3",
     "vite-plugin-svgo": "2.0.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 5491ba645a..dabfa66fe0 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -419,8 +419,8 @@ importers:
         specifier: 0.7.2
         version: 0.7.2
       stylelint:
-        specifier: 17.8.0
-        version: 17.8.0(typescript@6.0.3)
+        specifier: 17.9.0
+        version: 17.9.0(typescript@6.0.3)
       vite-plugin-static-copy:
         specifier: 4.1.0
         version: 4.1.0(vite@8.0.9(@types/node@24.12.2)(esbuild@0.28.0)(jiti@2.6.1)(less@4.1.3)(sass-embedded@1.91.0)(sass@1.91.0)(terser@5.44.0)(tsx@4.21.0)(yaml@2.8.3))
@@ -997,11 +997,11 @@ importers:
         specifier: '>=9.1.0'
         version: 15.0.0(eslint@10.2.1(jiti@2.6.1))(typescript@6.0.3)
       stylelint:
-        specifier: 17.8.0
-        version: 17.8.0(typescript@6.0.3)
+        specifier: 17.9.0
+        version: 17.9.0(typescript@6.0.3)
       stylelint-config-ckeditor5:
         specifier: '>=9.1.0'
-        version: 15.0.0(stylelint@17.8.0(typescript@6.0.3))
+        version: 15.0.0(stylelint@17.9.0(typescript@6.0.3))
       typescript:
         specifier: 6.0.3
         version: 6.0.3
@@ -1042,11 +1042,11 @@ importers:
         specifier: '>=9.1.0'
         version: 15.0.0(eslint@10.2.1(jiti@2.6.1))(typescript@6.0.3)
       stylelint:
-        specifier: 17.8.0
-        version: 17.8.0(typescript@6.0.3)
+        specifier: 17.9.0
+        version: 17.9.0(typescript@6.0.3)
       stylelint-config-ckeditor5:
         specifier: '>=9.1.0'
-        version: 15.0.0(stylelint@17.8.0(typescript@6.0.3))
+        version: 15.0.0(stylelint@17.9.0(typescript@6.0.3))
       typescript:
         specifier: 6.0.3
         version: 6.0.3
@@ -1087,11 +1087,11 @@ importers:
         specifier: '>=9.1.0'
         version: 15.0.0(eslint@10.2.1(jiti@2.6.1))(typescript@6.0.3)
       stylelint:
-        specifier: 17.8.0
-        version: 17.8.0(typescript@6.0.3)
+        specifier: 17.9.0
+        version: 17.9.0(typescript@6.0.3)
       stylelint-config-ckeditor5:
         specifier: '>=9.1.0'
-        version: 15.0.0(stylelint@17.8.0(typescript@6.0.3))
+        version: 15.0.0(stylelint@17.9.0(typescript@6.0.3))
       typescript:
         specifier: 6.0.3
         version: 6.0.3
@@ -1139,11 +1139,11 @@ importers:
         specifier: '>=9.1.0'
         version: 15.0.0(eslint@10.2.1(jiti@2.6.1))(typescript@6.0.3)
       stylelint:
-        specifier: 17.8.0
-        version: 17.8.0(typescript@6.0.3)
+        specifier: 17.9.0
+        version: 17.9.0(typescript@6.0.3)
       stylelint-config-ckeditor5:
         specifier: '>=9.1.0'
-        version: 15.0.0(stylelint@17.8.0(typescript@6.0.3))
+        version: 15.0.0(stylelint@17.9.0(typescript@6.0.3))
       typescript:
         specifier: 6.0.3
         version: 6.0.3
@@ -1184,11 +1184,11 @@ importers:
         specifier: '>=9.1.0'
         version: 15.0.0(eslint@10.2.1(jiti@2.6.1))(typescript@6.0.3)
       stylelint:
-        specifier: 17.8.0
-        version: 17.8.0(typescript@6.0.3)
+        specifier: 17.9.0
+        version: 17.9.0(typescript@6.0.3)
       stylelint-config-ckeditor5:
         specifier: '>=9.1.0'
-        version: 15.0.0(stylelint@17.8.0(typescript@6.0.3))
+        version: 15.0.0(stylelint@17.9.0(typescript@6.0.3))
       typescript:
         specifier: 6.0.3
         version: 6.0.3
@@ -2142,8 +2142,8 @@ packages:
       '@csstools/css-parser-algorithms': ^3.0.5
       '@csstools/css-tokenizer': ^3.0.4
 
-  '@csstools/css-calc@3.1.1':
-    resolution: {integrity: sha512-HJ26Z/vmsZQqs/o3a6bgKslXGFAungXGbinULZO3eMsOyNJHeBBZfup5FiZInOghgoM4Hwnmw+OgbJCNg1wwUQ==}
+  '@csstools/css-calc@3.2.0':
+    resolution: {integrity: sha512-bR9e6o2BDB12jzN/gIbjHa5wLJ4UjD1CB9pM7ehlc0ddk6EBz+yYS1EV2MF55/HUxrHcB/hehAyt5vhsA3hx7w==}
     engines: {node: '>=20.19.0'}
     peerDependencies:
       '@csstools/css-parser-algorithms': ^4.0.0
@@ -12958,8 +12958,8 @@ packages:
     peerDependencies:
       stylelint: '>=16.0.0'
 
-  stylelint@17.8.0:
-    resolution: {integrity: sha512-oHkld9T60LDSaUQ4CSVc+tlt9eUoDlxhaGWShsUCKyIL14boZfmK5bSphZqx64aiC5tCqX+BsQMTMoSz8D1zIg==}
+  stylelint@17.9.0:
+    resolution: {integrity: sha512-xO0jeY6z1/urFL5L/BZLmB1yYlbRiRMQnYH6ArZIDWJ+SZXGssOY7XoYb1JIv/L220+EBnwwJXJS4Mt/F96SvA==}
     engines: {node: '>=20.19.0'}
     hasBin: true
 
@@ -15758,7 +15758,7 @@ snapshots:
       '@csstools/css-tokenizer': 3.0.4
     optional: true
 
-  '@csstools/css-calc@3.1.1(@csstools/css-parser-algorithms@4.0.0(@csstools/css-tokenizer@4.0.0))(@csstools/css-tokenizer@4.0.0)':
+  '@csstools/css-calc@3.2.0(@csstools/css-parser-algorithms@4.0.0(@csstools/css-tokenizer@4.0.0))(@csstools/css-tokenizer@4.0.0)':
     dependencies:
       '@csstools/css-parser-algorithms': 4.0.0(@csstools/css-tokenizer@4.0.0)
       '@csstools/css-tokenizer': 4.0.0
@@ -19117,7 +19117,7 @@ snapshots:
       - supports-color
       - typescript
 
-  '@stylistic/stylelint-plugin@3.1.3(stylelint@17.8.0(typescript@6.0.3))':
+  '@stylistic/stylelint-plugin@3.1.3(stylelint@17.9.0(typescript@6.0.3))':
     dependencies:
       '@csstools/css-parser-algorithms': 3.0.5(@csstools/css-tokenizer@3.0.4)
       '@csstools/css-tokenizer': 3.0.4
@@ -19127,7 +19127,7 @@ snapshots:
       postcss-selector-parser: 6.1.2
       postcss-value-parser: 4.2.0
       style-search: 0.1.0
-      stylelint: 17.8.0(typescript@6.0.3)
+      stylelint: 17.9.0(typescript@6.0.3)
 
   '@symbiotejs/symbiote@1.11.7': {}
 
@@ -28910,24 +28910,24 @@ snapshots:
     optionalDependencies:
       react-dom: 19.2.4(react@19.2.4)
 
-  stylelint-config-ckeditor5@15.0.0(stylelint@17.8.0(typescript@6.0.3)):
+  stylelint-config-ckeditor5@15.0.0(stylelint@17.9.0(typescript@6.0.3)):
     dependencies:
-      '@stylistic/stylelint-plugin': 3.1.3(stylelint@17.8.0(typescript@6.0.3))
-      stylelint: 17.8.0(typescript@6.0.3)
-      stylelint-config-recommended: 16.0.0(stylelint@17.8.0(typescript@6.0.3))
-      stylelint-plugin-ckeditor5-rules: 15.0.0(stylelint@17.8.0(typescript@6.0.3))
+      '@stylistic/stylelint-plugin': 3.1.3(stylelint@17.9.0(typescript@6.0.3))
+      stylelint: 17.9.0(typescript@6.0.3)
+      stylelint-config-recommended: 16.0.0(stylelint@17.9.0(typescript@6.0.3))
+      stylelint-plugin-ckeditor5-rules: 15.0.0(stylelint@17.9.0(typescript@6.0.3))
 
-  stylelint-config-recommended@16.0.0(stylelint@17.8.0(typescript@6.0.3)):
+  stylelint-config-recommended@16.0.0(stylelint@17.9.0(typescript@6.0.3)):
     dependencies:
-      stylelint: 17.8.0(typescript@6.0.3)
+      stylelint: 17.9.0(typescript@6.0.3)
 
-  stylelint-plugin-ckeditor5-rules@15.0.0(stylelint@17.8.0(typescript@6.0.3)):
+  stylelint-plugin-ckeditor5-rules@15.0.0(stylelint@17.9.0(typescript@6.0.3)):
     dependencies:
-      stylelint: 17.8.0(typescript@6.0.3)
+      stylelint: 17.9.0(typescript@6.0.3)
 
-  stylelint@17.8.0(typescript@6.0.3):
+  stylelint@17.9.0(typescript@6.0.3):
     dependencies:
-      '@csstools/css-calc': 3.1.1(@csstools/css-parser-algorithms@4.0.0(@csstools/css-tokenizer@4.0.0))(@csstools/css-tokenizer@4.0.0)
+      '@csstools/css-calc': 3.2.0(@csstools/css-parser-algorithms@4.0.0(@csstools/css-tokenizer@4.0.0))(@csstools/css-tokenizer@4.0.0)
       '@csstools/css-parser-algorithms': 4.0.0(@csstools/css-tokenizer@4.0.0)
       '@csstools/css-syntax-patches-for-csstree': 1.1.3(css-tree@3.2.1)
       '@csstools/css-tokenizer': 4.0.0