diff --git a/package.json b/package.json
index 0dc7734f0bd5..890f664494f1 100644
--- a/package.json
+++ b/package.json
@@ -203,7 +203,7 @@
     "ts-node": "^10.9.1",
     "tslib": "2.8.1",
     "typescript": "5.6.3",
-    "undici": "6.21.0",
+    "undici": "7.0.0",
     "unenv": "^1.10.0",
     "verdaccio": "6.0.2",
     "verdaccio-auth-memory": "^10.0.0",
diff --git a/packages/angular_devkit/build_angular/package.json b/packages/angular_devkit/build_angular/package.json
index 388843165bf5..09ff44aa0de6 100644
--- a/packages/angular_devkit/build_angular/package.json
+++ b/packages/angular_devkit/build_angular/package.json
@@ -66,7 +66,7 @@
     "esbuild": "0.24.0"
   },
   "devDependencies": {
-    "undici": "6.21.0"
+    "undici": "7.0.0"
   },
   "peerDependencies": {
     "@angular/compiler-cli": "^19.0.0",
diff --git a/yarn.lock b/yarn.lock
index 74a256274d48..20dd0f78cbed 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -110,7 +110,7 @@ __metadata:
     terser: "npm:5.36.0"
     tree-kill: "npm:1.2.2"
     tslib: "npm:2.8.1"
-    undici: "npm:6.21.0"
+    undici: "npm:7.0.0"
     webpack: "npm:5.96.1"
     webpack-dev-middleware: "npm:7.4.2"
     webpack-dev-server: "npm:5.1.0"
@@ -778,7 +778,7 @@ __metadata:
     ts-node: "npm:^10.9.1"
     tslib: "npm:2.8.1"
     typescript: "npm:5.6.3"
-    undici: "npm:6.21.0"
+    undici: "npm:7.0.0"
     unenv: "npm:^1.10.0"
     verdaccio: "npm:6.0.2"
     verdaccio-auth-memory: "npm:^10.0.0"
@@ -18327,10 +18327,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"undici@npm:6.21.0":
-  version: 6.21.0
-  resolution: "undici@npm:6.21.0"
-  checksum: 10c0/afa9bde6dcf8e0f5cf1ff2fa977ba73dd5510299ddfca0e1f37ff326554172ae31cb3d4a40b5a729601be1f21b96a2684f974d74dab53f9b6930fd47d1949246
+"undici@npm:7.0.0":
+  version: 7.0.0
+  resolution: "undici@npm:7.0.0"
+  checksum: 10c0/6d91d5ea5f858ac9ea8b8e28722167dcb4606dc8f3886b6768de94de96fb0817a7fec974ecbc51c1fec03131e2cc44df49a2ab966f5d2d191f32163776f36d91
   languageName: node
   linkType: hard