diff --git a/package-lock.json b/package-lock.json
index ba50ad4..b20fbee 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,7 +14,7 @@
         "lodash": "^4.17.21",
         "sax": "^1.4.1",
         "strip-bom": "^5.0.0",
-        "whatwg-mimetype": "4.0.0"
+        "whatwg-mimetype": "5.0.0"
       },
       "devDependencies": {
         "@eslint/js": "^9.38.0",
@@ -23,7 +23,7 @@
         "@types/lodash": "^4.17.20",
         "@types/node": "^20.0.0",
         "@types/sax": "^1.2.7",
-        "@types/whatwg-mimetype": "^3.0.2",
+        "@types/whatwg-mimetype": "^5.0.0",
         "body-parser": "^2.2.0",
         "colors": "^1.4.0",
         "diff": "^8.0.2",
@@ -1035,9 +1035,9 @@
       "license": "MIT"
     },
     "node_modules/@types/whatwg-mimetype": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/@types/whatwg-mimetype/-/whatwg-mimetype-3.0.2.tgz",
-      "integrity": "sha512-c2AKvDT8ToxLIOUlN51gTiHXflsfIFisS4pO7pDPoKouJCESkhZnEy623gwP9laCy5lnLDAw1vAzu2vM2YLOrA==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@types/whatwg-mimetype/-/whatwg-mimetype-5.0.0.tgz",
+      "integrity": "sha512-YYiBDCoqBgDIF2ByYn4qDb4RaXZ46cOQ6j2We1Ni3bikFNI7YFeL8jxSiYowWsriZrb1mw09CLZ+b+ZkIhsLVw==",
       "dev": true,
       "license": "MIT"
     },
@@ -7659,12 +7659,12 @@
       }
     },
     "node_modules/whatwg-mimetype": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-4.0.0.tgz",
-      "integrity": "sha512-QaKxh0eNIi2mE9p2vEdzfagOKHCcj1pJ56EEHGQOVxp8r9/iszLUUV7v89x9O1p/T+NlTM5W7jW6+cz4Fq1YVg==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-5.0.0.tgz",
+      "integrity": "sha512-sXcNcHOC51uPGF0P/D4NVtrkjSU2fNsm9iog4ZvZJsL3rjoDAzXZhkm2MWt1y+PUdggKAYVoMAIYcs78wJ51Cw==",
       "license": "MIT",
       "engines": {
-        "node": ">=18"
+        "node": ">=20"
       }
     },
     "node_modules/which": {
diff --git a/package.json b/package.json
index 44a63d3..a924c86 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "lodash": "^4.17.21",
     "sax": "^1.4.1",
     "strip-bom": "^5.0.0",
-    "whatwg-mimetype": "4.0.0"
+    "whatwg-mimetype": "5.0.0"
   },
   "repository": {
     "type": "git",
@@ -92,7 +92,7 @@
     "@types/lodash": "^4.17.20",
     "@types/node": "^20.0.0",
     "@types/sax": "^1.2.7",
-    "@types/whatwg-mimetype": "^3.0.2",
+    "@types/whatwg-mimetype": "^5.0.0",
     "body-parser": "^2.2.0",
     "colors": "^1.4.0",
     "diff": "^8.0.2",