diff --git a/.changeset/shiny-balloons-try.md b/.changeset/shiny-balloons-try.md
new file mode 100644
index 000000000000..44e71ff08056
--- /dev/null
+++ b/.changeset/shiny-balloons-try.md
@@ -0,0 +1,6 @@
+---
+"@sveltejs/adapter-node": patch
+"@sveltejs/kit": patch
+---
+
+fix: upgrade `sirv` and `mrmime` to modernize javascript mime type
diff --git a/packages/adapter-node/package.json b/packages/adapter-node/package.json
index b5ce415cc5c5..e236e91c2555 100644
--- a/packages/adapter-node/package.json
+++ b/packages/adapter-node/package.json
@@ -39,7 +39,7 @@
 		"@types/node": "^18.19.3",
 		"c8": "^8.0.1",
 		"polka": "1.0.0-next.24",
-		"sirv": "^2.0.3",
+		"sirv": "^2.0.4",
 		"typescript": "^5.3.3",
 		"vitest": "^1.0.4"
 	},
diff --git a/packages/adapter-static/package.json b/packages/adapter-static/package.json
index 4a97079d27a7..f6188d8ce8f2 100644
--- a/packages/adapter-static/package.json
+++ b/packages/adapter-static/package.json
@@ -34,7 +34,7 @@
 		"@sveltejs/kit": "workspace:^",
 		"@sveltejs/vite-plugin-svelte": "^3.0.1",
 		"@types/node": "^18.19.3",
-		"sirv": "^2.0.3",
+		"sirv": "^2.0.4",
 		"svelte": "^4.2.8",
 		"typescript": "^5.3.3",
 		"vite": "^5.0.8"
diff --git a/packages/kit/package.json b/packages/kit/package.json
index 2ab837cdc672..28be8889dd97 100644
--- a/packages/kit/package.json
+++ b/packages/kit/package.json
@@ -17,10 +17,10 @@
 		"esm-env": "^1.0.0",
 		"kleur": "^4.1.5",
 		"magic-string": "^0.30.5",
-		"mrmime": "^1.0.1",
+		"mrmime": "^2.0.0",
 		"sade": "^1.8.1",
 		"set-cookie-parser": "^2.6.0",
-		"sirv": "^2.0.3",
+		"sirv": "^2.0.4",
 		"tiny-glob": "^0.2.9"
 	},
 	"devDependencies": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 6dab71904371..06d7df027c06 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -197,8 +197,8 @@ importers:
         specifier: 1.0.0-next.24
         version: 1.0.0-next.24
       sirv:
-        specifier: ^2.0.3
-        version: 2.0.3
+        specifier: ^2.0.4
+        version: 2.0.4
       typescript:
         specifier: ^5.3.3
         version: 5.3.3
@@ -221,8 +221,8 @@ importers:
         specifier: ^18.19.3
         version: 18.19.3
       sirv:
-        specifier: ^2.0.3
-        version: 2.0.3
+        specifier: ^2.0.4
+        version: 2.0.4
       svelte:
         specifier: ^4.2.8
         version: 4.2.8
@@ -432,8 +432,8 @@ importers:
         specifier: ^0.30.5
         version: 0.30.5
       mrmime:
-        specifier: ^1.0.1
-        version: 1.0.1
+        specifier: ^2.0.0
+        version: 2.0.0
       sade:
         specifier: ^1.8.1
         version: 1.8.1
@@ -441,8 +441,8 @@ importers:
         specifier: ^2.6.0
         version: 2.6.0
       sirv:
-        specifier: ^2.0.3
-        version: 2.0.3
+        specifier: ^2.0.4
+        version: 2.0.4
       tiny-glob:
         specifier: ^0.2.9
         version: 0.2.9
@@ -4777,6 +4777,11 @@ packages:
   /mrmime@1.0.1:
     resolution: {integrity: sha512-hzzEagAgDyoU1Q6yg5uI+AorQgdvMCur3FcKf7NhMKWsaYg+RnbTyHRa/9IlLF9rf455MOCtcqqrQQ83pPP7Uw==}
     engines: {node: '>=10'}
+    dev: false
+
+  /mrmime@2.0.0:
+    resolution: {integrity: sha512-eu38+hdgojoyq63s+yTpN4XMBdt5l8HhMhc4VKLO9KM5caLIBvUm4thi7fFaxyTmCKeNnXZ5pAlBwCUnhA09uw==}
+    engines: {node: '>=10'}
 
   /ms@2.1.2:
     resolution: {integrity: sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==}
@@ -5602,16 +5607,16 @@ packages:
       local-access: 1.1.0
       sade: 1.8.1
       semiver: 1.1.0
-      sirv: 2.0.3
+      sirv: 2.0.4
       tinydate: 1.3.0
     dev: true
 
-  /sirv@2.0.3:
-    resolution: {integrity: sha512-O9jm9BsID1P+0HOi81VpXPoDxYP374pkOLzACAoyUQ/3OUVndNpsz6wMnY2z+yOxzbllCKZrM+9QrWsv4THnyA==}
+  /sirv@2.0.4:
+    resolution: {integrity: sha512-94Bdh3cC2PKrbgSOUqTiGPWVZeSiXfKOVZNJniWoqrWrRkB1CJzBU3NEbiTsPcYy1lDsANA/THzS+9WBiy5nfQ==}
     engines: {node: '>= 10'}
     dependencies:
       '@polka/url': 1.0.0-next.24
-      mrmime: 1.0.1
+      mrmime: 2.0.0
       totalist: 3.0.1
 
   /sisteransi@1.0.5: