diff --git a/.changeset/shy-eels-drum.md b/.changeset/shy-eels-drum.md
new file mode 100644
index 0000000000..2c325638fa
--- /dev/null
+++ b/.changeset/shy-eels-drum.md
@@ -0,0 +1,5 @@
+---
+"@react-router/dev": patch
+---
+
+Typegen: only register route module types for routes within the app directory
diff --git a/contributors.yml b/contributors.yml
index 0b1dee6722..7b0c1b6f4b 100644
--- a/contributors.yml
+++ b/contributors.yml
@@ -117,6 +117,7 @@
 - ericschn
 - esadek
 - faergeek
+- fernandojbf
 - FilipJirsak
 - focusotter
 - foxscotch
diff --git a/integration/typegen-test.ts b/integration/typegen-test.ts
index 9ffcc5e183..01664a296a 100644
--- a/integration/typegen-test.ts
+++ b/integration/typegen-test.ts
@@ -456,6 +456,31 @@ test.describe("typegen", () => {
     await $("pnpm typecheck");
   });
 
+  test("route files with paths outside of app directory", async ({
+    cwd,
+    edit,
+    $,
+  }) => {
+    await fs.mkdir(Path.join(cwd, "node_modules/external_dependency"), {
+      recursive: true,
+    });
+    await edit({
+      "app/routes.ts": tsx`
+        import { type RouteConfig, route } from "@react-router/dev/routes";
+
+        export default [
+          route("outside/:id", "../node_modules/external_dependency/index.js"),
+        ] satisfies RouteConfig;
+      `,
+      "node_modules/external_dependency/index.js": tsx`
+        export default function Component() {
+          return <div>External Dependency</div>
+        }
+      `,
+    });
+    await $("pnpm typecheck");
+  });
+
   test("href", async ({ edit, $ }) => {
     await edit({
       "app/routes.ts": tsx`
diff --git a/packages/react-router-dev/typegen/generate.ts b/packages/react-router-dev/typegen/generate.ts
index dcab03fd27..72b5b46fb1 100644
--- a/packages/react-router-dev/typegen/generate.ts
+++ b/packages/react-router-dev/typegen/generate.ts
@@ -205,13 +205,15 @@ function routeModulesType(ctx: Context) {
         t.tsPropertySignature(
           t.stringLiteral(route.id),
           t.tsTypeAnnotation(
-            t.tsTypeQuery(
-              t.tsImportType(
-                t.stringLiteral(
-                  `./${Path.relative(ctx.rootDirectory, ctx.config.appDirectory)}/${route.file}`,
-                ),
-              ),
-            ),
+            isInAppDirectory(ctx, route.file)
+              ? t.tsTypeQuery(
+                  t.tsImportType(
+                    t.stringLiteral(
+                      `./${Path.relative(ctx.rootDirectory, ctx.config.appDirectory)}/${route.file}`,
+                    ),
+                  ),
+                )
+              : t.tsUnknownKeyword(),
           ),
         ),
       ),