diff --git a/apps/svelte.dev/package.json b/apps/svelte.dev/package.json
index cfb700058e..681f908d0f 100644
--- a/apps/svelte.dev/package.json
+++ b/apps/svelte.dev/package.json
@@ -78,6 +78,7 @@
 		"tiny-glob": "^0.2.9",
 		"tsx": "^4.19.0",
 		"typescript": "^5.5.4",
+		"valibot": "^1.1.0",
 		"vite": "^7.0.4",
 		"vite-imagetools": "^7.0.4"
 	}
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index cf02577f3a..f8a7acca9e 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -195,6 +195,9 @@ importers:
       typescript:
         specifier: ^5.5.4
         version: 5.8.2
+      valibot:
+        specifier: ^1.1.0
+        version: 1.1.0(typescript@5.8.2)
       vite:
         specifier: ^7.0.4
         version: 7.0.4(@types/node@20.19.6)(lightningcss@1.25.1)(tsx@4.19.0)
@@ -3042,6 +3045,14 @@ packages:
   util-deprecate@1.0.2:
     resolution: {integrity: sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==}
 
+  valibot@1.1.0:
+    resolution: {integrity: sha512-Nk8lX30Qhu+9txPYTwM0cFlWLdPFsFr6LblzqIySfbZph9+BFsAHsNvHOymEviUepeIW6KFHzpX8TKhbptBXXw==}
+    peerDependencies:
+      typescript: '>=5'
+    peerDependenciesMeta:
+      typescript:
+        optional: true
+
   vfile-message@4.0.2:
     resolution: {integrity: sha512-jRDZ1IMLttGj41KcZvlrYAaI3CfqpLpfpf+Mfig13viT6NKvRzWZ+lXz0Y5D60w6uJIBAOGq9mSHf0gktF0duw==}
 
@@ -5851,6 +5862,10 @@ snapshots:
 
   util-deprecate@1.0.2: {}
 
+  valibot@1.1.0(typescript@5.8.2):
+    optionalDependencies:
+      typescript: 5.8.2
+
   vfile-message@4.0.2:
     dependencies:
       '@types/unist': 3.0.3