diff --git a/CHANGELOG.md b/CHANGELOG.md
index d15580fa426a..34f86a5c9db4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,27 @@
+<a name="21.0.0-next.1"></a>
+# 21.0.0-next.1 "althupite-avocado" (2025-08-27)
+### cdk
+| Commit | Type | Description |
+| -- | -- | -- |
+| [540637270](https://github.com/angular/components/commit/540637270a5b72173f299e2ef1731499f43f19d3) | fix | **tree:** resolve memory leak ([#31754](https://github.com/angular/components/pull/31754)) |
+### material
+| Commit | Type | Description |
+| -- | -- | -- |
+| [29f0bb238](https://github.com/angular/components/commit/29f0bb238a2a327ac6ed69071f6aa555693ab2d4) | feat | **chips:** make ChipInput optional for MatChipGrid ([#31693](https://github.com/angular/components/pull/31693)) |
+| [13a9c48a0](https://github.com/angular/components/commit/13a9c48a093b1bfeab8f0328030dae60aca7519f) | fix | **chips:** refactor non-interactive actions to prevent adding click handlers ([#31664](https://github.com/angular/components/pull/31664)) |
+| [347963303](https://github.com/angular/components/commit/3479633036abf467354e936c1ddb4fd2cefcd6ea) | fix | **chips:** strengthen edit/remove icons focus/hover styling ([#31759](https://github.com/angular/components/pull/31759)) |
+| [605e2c9f6](https://github.com/angular/components/commit/605e2c9f6557b41f03ad3f9268d6c536433e1555) | fix | **core:** rename utility-classes to system-classes ([#31745](https://github.com/angular/components/pull/31745)) |
+| [8010c7cde](https://github.com/angular/components/commit/8010c7cde8e05661a978023dfd3c8c01a2861f97) | fix | **datepicker:** add visible labels to calendar buttons ([#31777](https://github.com/angular/components/pull/31777)) |
+| [46e189569](https://github.com/angular/components/commit/46e189569ed30b63ae8817ff4390bb1274a5a8b9) | fix | **sort:** error if signal is bound to disabled input ([#31776](https://github.com/angular/components/pull/31776)) |
+### cdk-experimental
+| Commit | Type | Description |
+| -- | -- | -- |
+| [668a2b4d5](https://github.com/angular/components/commit/668a2b4d5aa89750c4c4cb65d2659d9a41042ba5) | fix | **ui-patterns:** deselectAll unavailable items ([#31734](https://github.com/angular/components/pull/31734)) |
+| [d2c3bb971](https://github.com/angular/components/commit/d2c3bb971db4515d04b8842bcf96d4a8f8a65dac) | fix | **ui-patterns:** focus list when using active desce… ([#31756](https://github.com/angular/components/pull/31756)) |
+| [df0d753f1](https://github.com/angular/components/commit/df0d753f166562ef15252b0923a583a93b76a4b2) | fix | **ui-patterns:** Tree expand/collapse key should work in follow focus mode ([#31747](https://github.com/angular/components/pull/31747)) |
+
+<!-- CHANGELOG SPLIT MARKER -->
+
 <a name="20.2.1"></a>
 # 20.2.1 "armalcolite-alligator" (2025-08-27)
 ### cdk
diff --git a/MODULE.bazel.lock b/MODULE.bazel.lock
index af46bf9b2724..522a6983b4d8 100644
--- a/MODULE.bazel.lock
+++ b/MODULE.bazel.lock
@@ -544,7 +544,7 @@
         "bzlTransitiveDigest": "9IJp6IlB/FMHFBJe4MX/DQM4zi3oArC8yqYE/+NyPwk=",
         "usagesDigest": "Sz9Bt4IU6oJPfWwcpEB3Uz+IShADwq16bU/Mk+/8uzE=",
         "recordedFileInputs": {
-          "@@//package.json": "065233db5dde48f20c7c75d37f4c8ab02e91dd6eb8632733e3a597ef31bf8154",
+          "@@//package.json": "94d93025c2a6bb176bedd0f622fdb6d372bc6543921242273de83d6055e3f3f7",
           "@@devinfra~//bazel/package.json": "960bcecf963a211f96a3967c7cfb5d3e1cea08d94b27056a3e8dbf2fad1e2dd3",
           "@@rules_browsers~//package.json": "0d8cc69cc2c9ecf0eff677fa86843ad9146eca22462aace022a09c3adcb979f8"
         },
diff --git a/package.json b/package.json
index f51e9240ec27..d72a17a34b1e 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "ci-docs-monitor-test": "node --no-warnings=ExperimentalWarning --loader ts-node/esm/transpile-only scripts/docs-deploy/monitoring/ci-test.mts",
     "prepare": "husky"
   },
-  "version": "21.0.0-next.0",
+  "version": "21.0.0-next.1",
   "dependencies": {
     "@angular-devkit/core": "catalog:",
     "@angular-devkit/schematics": "catalog:",