diff --git a/commafeed-client/biome.json b/commafeed-client/biome.json
index 618b4949..35cf1b34 100644
--- a/commafeed-client/biome.json
+++ b/commafeed-client/biome.json
@@ -1,5 +1,5 @@
 {
-    "$schema": "https://biomejs.dev/schemas/2.4.0/schema.json",
+    "$schema": "https://biomejs.dev/schemas/2.4.2/schema.json",
     "formatter": {
         "indentStyle": "space",
         "indentWidth": 4,
diff --git a/commafeed-client/package-lock.json b/commafeed-client/package-lock.json
index 73196820..e598384f 100644
--- a/commafeed-client/package-lock.json
+++ b/commafeed-client/package-lock.json
@@ -45,7 +45,7 @@
                 "websocket-heartbeat-js": "^1.1.3"
             },
             "devDependencies": {
-                "@biomejs/biome": "^2.3.15",
+                "@biomejs/biome": "^2.4.0",
                 "@lingui/babel-plugin-lingui-macro": "^5.9.1",
                 "@lingui/cli": "^5.9.1",
                 "@lingui/vite-plugin": "^5.9.1",
@@ -429,9 +429,9 @@
             }
         },
         "node_modules/@biomejs/biome": {
-            "version": "2.4.0",
-            "resolved": "https://registry.npmjs.org/@biomejs/biome/-/biome-2.4.0.tgz",
-            "integrity": "sha512-iluT61cORUDIC5i/y42ljyQraCemmmcgbMLLCnYO+yh+2hjTmcMFcwY8G0zTzWCsPb3t3AyKc+0t/VuhPZULUg==",
+            "version": "2.4.2",
+            "resolved": "https://registry.npmjs.org/@biomejs/biome/-/biome-2.4.2.tgz",
+            "integrity": "sha512-vVE/FqLxNLbvYnFDYg3Xfrh1UdFhmPT5i+yPT9GE2nTUgI4rkqo5krw5wK19YHBd7aE7J6r91RRmb8RWwkjy6w==",
             "dev": true,
             "license": "MIT OR Apache-2.0",
             "bin": {
@@ -445,20 +445,20 @@
                 "url": "https://opencollective.com/biome"
             },
             "optionalDependencies": {
-                "@biomejs/cli-darwin-arm64": "2.4.0",
-                "@biomejs/cli-darwin-x64": "2.4.0",
-                "@biomejs/cli-linux-arm64": "2.4.0",
-                "@biomejs/cli-linux-arm64-musl": "2.4.0",
-                "@biomejs/cli-linux-x64": "2.4.0",
-                "@biomejs/cli-linux-x64-musl": "2.4.0",
-                "@biomejs/cli-win32-arm64": "2.4.0",
-                "@biomejs/cli-win32-x64": "2.4.0"
+                "@biomejs/cli-darwin-arm64": "2.4.2",
+                "@biomejs/cli-darwin-x64": "2.4.2",
+                "@biomejs/cli-linux-arm64": "2.4.2",
+                "@biomejs/cli-linux-arm64-musl": "2.4.2",
+                "@biomejs/cli-linux-x64": "2.4.2",
+                "@biomejs/cli-linux-x64-musl": "2.4.2",
+                "@biomejs/cli-win32-arm64": "2.4.2",
+                "@biomejs/cli-win32-x64": "2.4.2"
             }
         },
         "node_modules/@biomejs/cli-darwin-arm64": {
-            "version": "2.4.0",
-            "resolved": "https://registry.npmjs.org/@biomejs/cli-darwin-arm64/-/cli-darwin-arm64-2.4.0.tgz",
-            "integrity": "sha512-L+YpOtPSuU0etomfvFTPWRsa7+8ejaJL3yaROEoT/96HDJbR6OsvZQk0C8JUYou+XFdP+JcGxqZknkp4n934RA==",
+            "version": "2.4.2",
+            "resolved": "https://registry.npmjs.org/@biomejs/cli-darwin-arm64/-/cli-darwin-arm64-2.4.2.tgz",
+            "integrity": "sha512-3pEcKCP/1POKyaZZhXcxFl3+d9njmeAihZ17k8lL/1vk+6e0Cbf0yPzKItFiT+5Yh6TQA4uKvnlqe0oVZwRxCA==",
             "cpu": [
                 "arm64"
             ],
@@ -473,9 +473,9 @@
             }
         },
         "node_modules/@biomejs/cli-darwin-x64": {
-            "version": "2.4.0",
-            "resolved": "https://registry.npmjs.org/@biomejs/cli-darwin-x64/-/cli-darwin-x64-2.4.0.tgz",
-            "integrity": "sha512-Aq+S7ffpb5ynTyLgtnEjG+W6xuTd2F7FdC7J6ShpvRhZwJhjzwITGF9vrqoOnw0sv1XWkt2Q1Rpg+hleg/Xg7Q==",
+            "version": "2.4.2",
+            "resolved": "https://registry.npmjs.org/@biomejs/cli-darwin-x64/-/cli-darwin-x64-2.4.2.tgz",
+            "integrity": "sha512-P7hK1jLVny+0R9UwyGcECxO6sjETxfPyBm/1dmFjnDOHgdDPjPqozByunrwh4xPKld8sxOr5eAsSqal5uKgeBg==",
             "cpu": [
                 "x64"
             ],
@@ -490,9 +490,9 @@
             }
         },
         "node_modules/@biomejs/cli-linux-arm64": {
-            "version": "2.4.0",
-            "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-arm64/-/cli-linux-arm64-2.4.0.tgz",
-            "integrity": "sha512-u2p54IhvNAWB+h7+rxCZe3reNfQYFK+ppDw+q0yegrGclFYnDPZAntv/PqgUacpC3uxTeuWFgWW7RFe3lHuxOA==",
+            "version": "2.4.2",
+            "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-arm64/-/cli-linux-arm64-2.4.2.tgz",
+            "integrity": "sha512-DI3Mi7GT2zYNgUTDEbSjl3e1KhoP76OjQdm8JpvZYZWtVDRyLd3w8llSr2TWk1z+U3P44kUBWY3X7H9MD1/DGQ==",
             "cpu": [
                 "arm64"
             ],
@@ -507,9 +507,9 @@
             }
         },
         "node_modules/@biomejs/cli-linux-arm64-musl": {
-            "version": "2.4.0",
-            "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-arm64-musl/-/cli-linux-arm64-musl-2.4.0.tgz",
-            "integrity": "sha512-1rhDUq8sf7xX3tg7vbnU3WVfanKCKi40OXc4VleBMzRStmQHdeBY46aFP6VdwEomcVjyNiu+Zcr3LZtAdrZrjQ==",
+            "version": "2.4.2",
+            "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-arm64-musl/-/cli-linux-arm64-musl-2.4.2.tgz",
+            "integrity": "sha512-/x04YK9+7erw6tYEcJv9WXoBHcULI/wMOvNdAyE9S3JStZZ9yJyV67sWAI+90UHuDo/BDhq0d96LDqGlSVv7WA==",
             "cpu": [
                 "arm64"
             ],
@@ -524,9 +524,9 @@
             }
         },
         "node_modules/@biomejs/cli-linux-x64": {
-            "version": "2.4.0",
-            "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-x64/-/cli-linux-x64-2.4.0.tgz",
-            "integrity": "sha512-WVFOhsnzhrbMGOSIcB9yFdRV2oG2KkRRhIZiunI9gJqSU3ax9ErdnTxRfJUxZUI9NbzVxC60OCXNcu+mXfF/Tw==",
+            "version": "2.4.2",
+            "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-x64/-/cli-linux-x64-2.4.2.tgz",
+            "integrity": "sha512-GK2ErnrKpWFigYP68cXiCHK4RTL4IUWhK92AFS3U28X/nuAL5+hTuy6hyobc8JZRSt+upXt1nXChK+tuHHx4mA==",
             "cpu": [
                 "x64"
             ],
@@ -541,9 +541,9 @@
             }
         },
         "node_modules/@biomejs/cli-linux-x64-musl": {
-            "version": "2.4.0",
-            "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-x64-musl/-/cli-linux-x64-musl-2.4.0.tgz",
-            "integrity": "sha512-Omo0xhl63z47X+CrE5viEWKJhejJyndl577VoXg763U/aoATrK3r5+8DPh02GokWPeODX1Hek00OtjjooGan9w==",
+            "version": "2.4.2",
+            "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-x64-musl/-/cli-linux-x64-musl-2.4.2.tgz",
+            "integrity": "sha512-wbBmTkeAoAYbOQ33f6sfKG7pcRSydQiF+dTYOBjJsnXO2mWEOQHllKlC2YVnedqZFERp2WZhFUoO7TNRwnwEHQ==",
             "cpu": [
                 "x64"
             ],
@@ -558,9 +558,9 @@
             }
         },
         "node_modules/@biomejs/cli-win32-arm64": {
-            "version": "2.4.0",
-            "resolved": "https://registry.npmjs.org/@biomejs/cli-win32-arm64/-/cli-win32-arm64-2.4.0.tgz",
-            "integrity": "sha512-aqRwW0LJLV1v1NzyLvLWQhdLmDSAV1vUh+OBdYJaa8f28XBn5BZavo+WTfqgEzALZxlNfBmu6NGO6Al3MbCULw==",
+            "version": "2.4.2",
+            "resolved": "https://registry.npmjs.org/@biomejs/cli-win32-arm64/-/cli-win32-arm64-2.4.2.tgz",
+            "integrity": "sha512-k2uqwLYrNNxnaoiW3RJxoMGnbKda8FuCmtYG3cOtVljs3CzWxaTR+AoXwKGHscC9thax9R4kOrtWqWN0+KdPTw==",
             "cpu": [
                 "arm64"
             ],
@@ -575,9 +575,9 @@
             }
         },
         "node_modules/@biomejs/cli-win32-x64": {
-            "version": "2.4.0",
-            "resolved": "https://registry.npmjs.org/@biomejs/cli-win32-x64/-/cli-win32-x64-2.4.0.tgz",
-            "integrity": "sha512-g47s+V+OqsGxbSZN3lpav6WYOk0PIc3aCBAq+p6dwSynL3K5MA6Cg6nkzDOlu28GEHwbakW+BllzHCJCxnfK5Q==",
+            "version": "2.4.2",
+            "resolved": "https://registry.npmjs.org/@biomejs/cli-win32-x64/-/cli-win32-x64-2.4.2.tgz",
+            "integrity": "sha512-9ma7C4g8Sq3cBlRJD2yrsHXB1mnnEBdpy7PhvFrylQWQb4PoyCmPucdX7frvsSBQuFtIiKCrolPl/8tCZrKvgQ==",
             "cpu": [
                 "x64"
             ],
@@ -6298,7 +6298,7 @@
             "version": "5.9.3",
             "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
             "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
-            "dev": true,
+            "devOptional": true,
             "license": "Apache-2.0",
             "bin": {
                 "tsc": "bin/tsc",
diff --git a/commafeed-client/package.json b/commafeed-client/package.json
index 3177ec47..2bc51a24 100644
--- a/commafeed-client/package.json
+++ b/commafeed-client/package.json
@@ -53,7 +53,7 @@
         "websocket-heartbeat-js": "^1.1.3"
     },
     "devDependencies": {
-        "@biomejs/biome": "^2.3.15",
+        "@biomejs/biome": "^2.4.0",
         "@lingui/babel-plugin-lingui-macro": "^5.9.1",
         "@lingui/cli": "^5.9.1",
         "@lingui/vite-plugin": "^5.9.1",