diff --git a/packages/angular/build/package.json b/packages/angular/build/package.json
index 49cb93d743ac..c320517d3e74 100644
--- a/packages/angular/build/package.json
+++ b/packages/angular/build/package.json
@@ -26,7 +26,7 @@
     "@vitejs/plugin-basic-ssl": "2.3.0",
     "beasties": "0.5.5",
     "browserslist": "^4.26.0",
-    "chokidar": "5.0.0",
+    "chokidar": "6.0.0",
     "esbuild": "0.28.2",
     "https-proxy-agent": "9.1.0",
     "jsonc-parser": "3.3.1",
diff --git a/packages/angular/build/src/utils/watcher.ts b/packages/angular/build/src/utils/watcher.ts
index fd865ee80b56..8004c8ac5846 100644
--- a/packages/angular/build/src/utils/watcher.ts
+++ b/packages/angular/build/src/utils/watcher.ts
@@ -219,16 +219,20 @@ export function getDirectoryPath(posixPath: string): string {
   return dir;
 }
 
+function isNodeModulesSegment(lookupKey: string): boolean {
+  return lookupKey === NODE_MODULES || lookupKey.endsWith(`/${NODE_MODULES}`);
+}
+
 /**
  * Determines whether a file path lookup key or any of its parent directories are present in watchedFiles.
  */
-function isPathWatched(fileLookupKey: string, watchedFiles: Set<string>): boolean {
+function isPathWatched(fileLookupKey: string, watchedFiles: ReadonlySet<string>): boolean {
   if (watchedFiles.has(fileLookupKey)) {
     return true;
   }
 
   let current = fileLookupKey;
-  while (true) {
+  while (!isNodeModulesSegment(current)) {
     const parent = getDirectoryPath(current);
     if (parent === current) {
       break;
@@ -1111,8 +1115,8 @@ function createChokidarIgnored(
       }) ?? [];
 
   // When watching a directory (e.g. projectRoot via NG_BUILD_WATCH_ROOT), prune `node_modules`
-  // directories unless explicitly added to `watchedFiles`. Explicitly added files inside
-  // `node_modules` do not end with `/node_modules` and remain watchable.
+  // directories and any unwatched descendants inside `node_modules` (since Chokidar 6 keeps
+  // ancestor directories of explicitly watched package files un-ignored to traverse to them).
   return [
     ...customIgnored,
     (filePath: string) => {
@@ -1122,11 +1126,15 @@ function createChokidarIgnored(
 
       const posixPath = toPosixPathNormalized(filePath);
       const lookupKey = toLookupKey(posixPath, isCaseSensitive);
+      if (
+        !isNodeModulesSegment(lookupKey) &&
+        !lookupKey.includes(`/${NODE_MODULES}/`) &&
+        !lookupKey.startsWith(`${NODE_MODULES}/`)
+      ) {
+        return false;
+      }
 
-      return (
-        (lookupKey === NODE_MODULES || lookupKey.endsWith(`/${NODE_MODULES}`)) &&
-        !watchedFiles.has(lookupKey)
-      );
+      return !isPathWatched(lookupKey, watchedFiles);
     },
   ];
 }
diff --git a/packages/angular_devkit/core/package.json b/packages/angular_devkit/core/package.json
index 8145dfe036b6..2d93dde02305 100644
--- a/packages/angular_devkit/core/package.json
+++ b/packages/angular_devkit/core/package.json
@@ -33,10 +33,10 @@
     "source-map": "0.8.0"
   },
   "devDependencies": {
-    "chokidar": "5.0.0"
+    "chokidar": "6.0.0"
   },
   "peerDependencies": {
-    "chokidar": "^5.0.0"
+    "chokidar": "^6.0.0"
   },
   "peerDependenciesMeta": {
     "chokidar": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e60d424b0f55..491a444843e7 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -499,8 +499,8 @@ importers:
         specifier: ^4.26.0
         version: 4.29.3
       chokidar:
-        specifier: 5.0.0
-        version: 5.0.0
+        specifier: 6.0.0
+        version: 6.0.0
       esbuild:
         specifier: 0.28.2
         version: 0.28.2
@@ -926,8 +926,8 @@ importers:
         version: 0.8.0
     devDependencies:
       chokidar:
-        specifier: 5.0.0
-        version: 5.0.0
+        specifier: 6.0.0
+        version: 6.0.0
 
   packages/angular_devkit/schematics:
     dependencies:
@@ -4526,6 +4526,10 @@ packages:
     resolution: {integrity: sha512-TQMmc3w+5AxjpL8iIiwebF73dRDF4fBIieAqGn9RGCWaEVwQ6Fb2cGe31Yns0RRIzii5goJ1Y7xbMwo1TxMplw==}
     engines: {node: '>= 20.19.0'}
 
+  chokidar@6.0.0:
+    resolution: {integrity: sha512-Ec2Z7wpcKBiMpR7DxteoqS/sq5G5d2A4fpxzPv6+fD7xNNdrTghn7L11YwV5EN1B3i72Erc3XVT5FkWIDx90+A==}
+    engines: {node: '>= 22.22'}
+
   chrome-trace-event@1.0.4:
     resolution: {integrity: sha512-rNjApaLzuwaOTjCiT8lSDdGN1APCiqkChLMJxJPWLunPAt5fy8xgU9/jNOchV84wfIxrA0lRQB7oCT8jrn/wrQ==}
     engines: {node: '>=6.0'}
@@ -12364,6 +12368,10 @@ snapshots:
     dependencies:
       readdirp: 5.1.1
 
+  chokidar@6.0.0:
+    dependencies:
+      readdirp: 5.1.1
+
   chrome-trace-event@1.0.4: {}
 
   chromium-bidi@157.0.8090-0(devtools-protocol@0.0.1696802):