diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 62d2cffd..f0b896cc 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -10,6 +10,16 @@ Depending on your needs, you may need to install CocoaPods in the example React
 
 After contributing your changes, please make sure to add a [changeset](https://github.com/changesets/changesets) describing your changes. This will help us in publishing new versions.
 
+### Pre-commit guard for brownfield-navigation
+
+ This is a monorepo and the files inside `@callstack/brownfield-navigation` are auto-generated whenever `brownfield:package:*` is run. This is a desired behavior for the end user as these files will be inside the `node_modules`. However, since in this repo this package is symlinked, we see the changes in our git tree.
+
+These should not be committed by accident. A `pre-commit` guard blocks commits when those generated files are staged.
+
+If you need to intentionally commit those files (for an explicit update), bypass the guard for that commit:
+
+`SKIP_BROWNFIELD_NAVIGATION_CHECK=1 git commit -m "..."`
+
 ## Publishing to npm
 
 We use [changesets](https://github.com/changesets/changesets) to make it easier to publish new versions. It handles common tasks like bumping version based on semver, creating tags and releases etc.
diff --git a/apps/RNApp/ios/Podfile.lock b/apps/RNApp/ios/Podfile.lock
index 90fc0f1b..552d7bd9 100644
--- a/apps/RNApp/ios/Podfile.lock
+++ b/apps/RNApp/ios/Podfile.lock
@@ -1,5 +1,5 @@
 PODS:
-  - BrownfieldNavigation (3.8.1):
+  - BrownfieldNavigation (3.12.0):
     - hermes-engine
     - RCTRequired
     - RCTTypeSafety
@@ -21,7 +21,7 @@ PODS:
     - ReactCommon/turbomodule/core
     - ReactNativeDependencies
     - Yoga
-  - Brownie (3.8.1):
+  - Brownie (3.12.0):
     - hermes-engine
     - RCTRequired
     - RCTTypeSafety
@@ -1803,7 +1803,7 @@ PODS:
     - ReactNativeDependencies
   - ReactAppDependencyProvider (0.85.0):
     - ReactCodegen
-  - ReactBrownfield (3.8.1):
+  - ReactBrownfield (3.12.0):
     - hermes-engine
     - RCTRequired
     - RCTTypeSafety
@@ -2174,10 +2174,10 @@ EXTERNAL SOURCES:
     :path: "../node_modules/react-native/ReactCommon/yoga"
 
 SPEC CHECKSUMS:
-  BrownfieldNavigation: 6bab41701e536267009b77cf6dc6a8a509db1f4a
-  Brownie: c0b61f2fd916a0bcb6b4918b49aa3eebec5e1cd6
+  BrownfieldNavigation: eb4f0937d1f5d81f97bcccaea57484913a7e83e1
+  Brownie: 9d58df8e6fbc0c7f01968df81370af2207e76e16
   FBLazyVector: c00c20551d40126351a6783c47ce75f5b374851b
-  hermes-engine: 891a8d77b6705a5c71992a8f3eaf2bfc2cfb1dda
+  hermes-engine: 133acc7688f66a6db232bff7de874c7129b01e1e
   RCTDeprecation: 3bb167081b134461cfeb875ff7ae1945f8635257
   RCTRequired: 74839f55d5058a133a0bc4569b0afec750957f64
   RCTSwiftUI: 87a316382f3eab4dd13d2a0d0fd2adcce917361a
@@ -2186,7 +2186,7 @@ SPEC CHECKSUMS:
   React: 1b1536b9099195944034e65b1830f463caaa8390
   React-callinvoker: 6dff6d17d1d6cc8fdf85468a649bafed473c65f5
   React-Core: 00faa4d038298089a1d5a5b21dde8660c4f0820d
-  React-Core-prebuilt: ca4f822f6813ee31e20a965602ed5bbe611a003d
+  React-Core-prebuilt: 46fad9d85d53619a69cbd91fa8703ce085c73c29
   React-CoreModules: a17807f849bfd86045b0b9a75ec8c19373b482f6
   React-cxxreact: c7b53ace5827be54048288bce5c55f337c41e95f
   React-debug: 1f20c32441d0090cf67e6b966895f4ccd929d84c
@@ -2246,10 +2246,10 @@ SPEC CHECKSUMS:
   React-utils: f747ea9fa3f4b293533ec4ef7976d1e37f004ef8
   React-webperformancenativemodule: cf676ba871cc4b6ae175f75b92e8c689960c4141
   ReactAppDependencyProvider: 5787b37b8e2e51dfeab697ec031cc7c4080dcea2
-  ReactBrownfield: 9acfec561aae66f2adbf6faa451a0712b17a38b2
+  ReactBrownfield: 3e3d19d1f8859299826e72a87976bb9525f378c8
   ReactCodegen: d9ba64702c846111b3eeb157ea2e15aa5bb2ea55
   ReactCommon: fe2a3af8975e63efa60f95fca8c34dc85deee360
-  ReactNativeDependencies: 94375812b438d76ddfa8937a75fbb59cc0cd8fff
+  ReactNativeDependencies: bf5d16ce034aaabeeb0f7102f7db739529a3b910
   RNScreens: 85c533985720c563272c6f6dd19e1278dfd0f5d4
   Yoga: ce94692032f0a4e4ca7ed9e52a284cb208fcdbbb
 
diff --git a/lefthook.yml b/lefthook.yml
index f55eb961..5823dad2 100644
--- a/lefthook.yml
+++ b/lefthook.yml
@@ -1,6 +1,9 @@
 pre-commit:
   parallel: true
   commands:
+    brownfield-navigation-drift:
+      run: node --experimental-strip-types --no-warnings ./scripts/check-brownfield-navigation-drift.ts
+
     lint:
       glob: '*.{js,ts,jsx,tsx}'
       run: yarn lint
diff --git a/scripts/check-brownfield-navigation-drift.ts b/scripts/check-brownfield-navigation-drift.ts
new file mode 100644
index 00000000..f270c212
--- /dev/null
+++ b/scripts/check-brownfield-navigation-drift.ts
@@ -0,0 +1,71 @@
+import path from 'node:path';
+import { execFileSync } from 'node:child_process';
+import { fileURLToPath } from 'node:url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const REPO_ROOT = path.resolve(__dirname, '..');
+const SKIP_ENV_VAR = 'SKIP_BROWNFIELD_NAVIGATION_CHECK';
+
+const PROTECTED_GENERATED_FILES = [
+  'packages/brownfield-navigation/src/NativeBrownfieldNavigation.ts',
+  'packages/brownfield-navigation/src/index.ts',
+  'packages/brownfield-navigation/lib/commonjs/index.js',
+  'packages/brownfield-navigation/lib/module/index.js',
+  'packages/brownfield-navigation/lib/typescript/commonjs/src/index.d.ts',
+  'packages/brownfield-navigation/lib/typescript/module/src/index.d.ts',
+  'packages/brownfield-navigation/ios/BrownfieldNavigationDelegate.swift',
+  'packages/brownfield-navigation/ios/BrownfieldNavigationModels.swift',
+  'packages/brownfield-navigation/ios/NativeBrownfieldNavigation.mm',
+  'packages/brownfield-navigation/android/src/main/java/com/callstack/nativebrownfieldnavigation/BrownfieldNavigationDelegate.kt',
+  'packages/brownfield-navigation/android/src/main/java/com/callstack/nativebrownfieldnavigation/BrownfieldNavigationModels.kt',
+  'packages/brownfield-navigation/android/src/main/java/com/callstack/nativebrownfieldnavigation/NativeBrownfieldNavigationModule.kt',
+];
+
+function readStagedFiles(repoRoot: string): string[] {
+  const output = execFileSync(
+    'git',
+    ['diff', '--cached', '--name-only', '--diff-filter=ACMR'],
+    {
+      cwd: repoRoot,
+      encoding: 'utf8',
+    }
+  );
+
+  return output
+    .split('\n')
+    .map((filePath) => filePath.trim())
+    .filter(Boolean);
+}
+
+function main(): void {
+  if (process.env[SKIP_ENV_VAR] === '1') {
+    console.log(
+      `${SKIP_ENV_VAR}=1 set, skipping brownfield navigation generated file check`
+    );
+    return;
+  }
+
+  const protectedFiles = new Set(PROTECTED_GENERATED_FILES);
+  const stagedProtectedFiles = readStagedFiles(REPO_ROOT).filter((filePath) =>
+    protectedFiles.has(filePath)
+  );
+
+  if (stagedProtectedFiles.length === 0) {
+    return;
+  }
+
+  console.error(
+    [
+      'Commit blocked: generated brownfield-navigation files are staged.',
+      '',
+      'These files are generated by brownfield navigation codegen and should not be committed accidentally:',
+      ...stagedProtectedFiles.map((filePath) => `- ${filePath}`),
+      '',
+      `If this change is intentional, bypass once with: ${SKIP_ENV_VAR}=1 git commit -m "..."`,
+    ].join('\n')
+  );
+  process.exit(1);
+}
+
+main();