diff --git a/.nucleus.yaml b/.nucleus.yaml
index 6fb230cde7..1e5e0b1d48 100644
--- a/.nucleus.yaml
+++ b/.nucleus.yaml
@@ -38,9 +38,6 @@ branches:
     spring25:
         pull-request:
             <<: *branch-definition
-    summer25:
-        pull-request:
-            <<: *branch-definition
 jobs:
     build-and-test:
         memory-limit: 16
@@ -73,4 +70,4 @@ steps:
     npm-publish-release:
         params:
             access: public
-            tag: summer25 # note: this should be summer22, winter23, etc. if this .nucleus.yaml file is in a non-master branch
+            tag: latest # note: this should be summer22, winter23, etc. if this .nucleus.yaml file is in a non-master branch
diff --git a/package.json b/package.json
index 006750e678..0b98e31fe2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "lwc-monorepo",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "private": true,
     "description": "Lightning Web Components",
     "repository": {
diff --git a/packages/@lwc/aria-reflection/package.json b/packages/@lwc/aria-reflection/package.json
index f153aafd52..d0dd70fc0d 100644
--- a/packages/@lwc/aria-reflection/package.json
+++ b/packages/@lwc/aria-reflection/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/aria-reflection",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "ARIA element reflection polyfill for strings",
     "keywords": [
         "aom",
diff --git a/packages/@lwc/babel-plugin-component/package.json b/packages/@lwc/babel-plugin-component/package.json
index 431b2c1975..24c62cbeaf 100644
--- a/packages/@lwc/babel-plugin-component/package.json
+++ b/packages/@lwc/babel-plugin-component/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/babel-plugin-component",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Babel plugin to transform a LWC module",
     "keywords": [
         "lwc"
@@ -47,8 +47,8 @@
     },
     "dependencies": {
         "@babel/helper-module-imports": "7.25.9",
-        "@lwc/errors": "8.16.5",
-        "@lwc/shared": "8.16.5",
+        "@lwc/errors": "8.16.4",
+        "@lwc/shared": "8.16.4",
         "line-column": "~1.0.2"
     },
     "devDependencies": {
diff --git a/packages/@lwc/compiler/package.json b/packages/@lwc/compiler/package.json
index 0ea377da65..abd56ce4c9 100644
--- a/packages/@lwc/compiler/package.json
+++ b/packages/@lwc/compiler/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/compiler",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "LWC compiler",
     "keywords": [
         "lwc"
@@ -52,11 +52,11 @@
         "@babel/plugin-transform-class-properties": "7.25.9",
         "@babel/plugin-transform-object-rest-spread": "7.25.9",
         "@locker/babel-plugin-transform-unforgeables": "0.22.0",
-        "@lwc/babel-plugin-component": "8.16.5",
-        "@lwc/errors": "8.16.5",
-        "@lwc/shared": "8.16.5",
-        "@lwc/ssr-compiler": "8.16.5",
-        "@lwc/style-compiler": "8.16.5",
-        "@lwc/template-compiler": "8.16.5"
+        "@lwc/babel-plugin-component": "8.16.4",
+        "@lwc/errors": "8.16.4",
+        "@lwc/shared": "8.16.4",
+        "@lwc/ssr-compiler": "8.16.4",
+        "@lwc/style-compiler": "8.16.4",
+        "@lwc/template-compiler": "8.16.4"
     }
 }
diff --git a/packages/@lwc/engine-core/package.json b/packages/@lwc/engine-core/package.json
index 7bcf31cd66..94f70dc657 100644
--- a/packages/@lwc/engine-core/package.json
+++ b/packages/@lwc/engine-core/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/engine-core",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Core LWC engine APIs.",
     "keywords": [
         "lwc"
@@ -46,9 +46,9 @@
         }
     },
     "dependencies": {
-        "@lwc/features": "8.16.5",
-        "@lwc/shared": "8.16.5",
-        "@lwc/signals": "8.16.5"
+        "@lwc/features": "8.16.4",
+        "@lwc/shared": "8.16.4",
+        "@lwc/signals": "8.16.4"
     },
     "devDependencies": {
         "observable-membrane": "2.0.0"
diff --git a/packages/@lwc/engine-core/src/framework/mutation-tracker.ts b/packages/@lwc/engine-core/src/framework/mutation-tracker.ts
index bc00a6b822..d179ea9d88 100644
--- a/packages/@lwc/engine-core/src/framework/mutation-tracker.ts
+++ b/packages/@lwc/engine-core/src/framework/mutation-tracker.ts
@@ -4,9 +4,10 @@
  * SPDX-License-Identifier: MIT
  * For full license text, see the LICENSE file in the repo root or https://opensource.org/licenses/MIT
  */
-import { isNull, isObject, isTrustedSignal } from '@lwc/shared';
+import { isFunction, isNull, isObject, isTrustedSignal } from '@lwc/shared';
 import { ReactiveObserver, valueMutated, valueObserved } from '../libs/mutation-tracker';
 import { subscribeToSignal } from '../libs/signal-tracker';
+import { safeHasProp } from './utils';
 import type { Signal } from '@lwc/signals';
 import type { JobFunction, CallbackFunction } from '../libs/mutation-tracker';
 import type { VM } from './vm';
@@ -41,6 +42,9 @@ export function componentValueObserved(vm: VM, key: PropertyKey, target: any = {
         lwcRuntimeFlags.ENABLE_EXPERIMENTAL_SIGNALS &&
         isObject(target) &&
         !isNull(target) &&
+        safeHasProp(target, 'value') &&
+        safeHasProp(target, 'subscribe') &&
+        isFunction(target.subscribe) &&
         isTrustedSignal(target) &&
         // Only subscribe if a template is being rendered by the engine
         tro.isObserving()
diff --git a/packages/@lwc/engine-dom/package.json b/packages/@lwc/engine-dom/package.json
index 01bb8c783b..4b7bc1ea82 100644
--- a/packages/@lwc/engine-dom/package.json
+++ b/packages/@lwc/engine-dom/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/engine-dom",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Renders LWC components in a DOM environment.",
     "keywords": [
         "lwc"
@@ -46,9 +46,9 @@
         }
     },
     "devDependencies": {
-        "@lwc/engine-core": "8.16.5",
-        "@lwc/shared": "8.16.5",
-        "@lwc/features": "8.16.5"
+        "@lwc/engine-core": "8.16.4",
+        "@lwc/shared": "8.16.4",
+        "@lwc/features": "8.16.4"
     },
     "lwc": {
         "modules": [
diff --git a/packages/@lwc/engine-server/package.json b/packages/@lwc/engine-server/package.json
index af9d222eff..ff01f82a86 100644
--- a/packages/@lwc/engine-server/package.json
+++ b/packages/@lwc/engine-server/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/engine-server",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Renders LWC components in a server environment.",
     "keywords": [
         "lwc"
@@ -46,10 +46,10 @@
         }
     },
     "devDependencies": {
-        "@lwc/engine-core": "8.16.5",
-        "@lwc/rollup-plugin": "8.16.5",
-        "@lwc/shared": "8.16.5",
-        "@lwc/features": "8.16.5",
+        "@lwc/engine-core": "8.16.4",
+        "@lwc/rollup-plugin": "8.16.4",
+        "@lwc/shared": "8.16.4",
+        "@lwc/features": "8.16.4",
         "@rollup/plugin-virtual": "^3.0.2",
         "parse5": "^7.2.1"
     }
diff --git a/packages/@lwc/errors/package.json b/packages/@lwc/errors/package.json
index 931541e351..faa970971f 100644
--- a/packages/@lwc/errors/package.json
+++ b/packages/@lwc/errors/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/errors",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "LWC Error Utilities",
     "keywords": [
         "lwc"
diff --git a/packages/@lwc/features/package.json b/packages/@lwc/features/package.json
index 3b321a76e5..df8375d977 100644
--- a/packages/@lwc/features/package.json
+++ b/packages/@lwc/features/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/features",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "LWC Features Flags",
     "keywords": [
         "lwc"
@@ -46,6 +46,6 @@
         }
     },
     "dependencies": {
-        "@lwc/shared": "8.16.5"
+        "@lwc/shared": "8.16.4"
     }
 }
diff --git a/packages/@lwc/integration-karma/package.json b/packages/@lwc/integration-karma/package.json
index e8c6de919a..005a2d2849 100644
--- a/packages/@lwc/integration-karma/package.json
+++ b/packages/@lwc/integration-karma/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@lwc/integration-karma",
     "private": true,
-    "version": "8.16.5",
+    "version": "8.16.4",
     "scripts": {
         "start": "KARMA_MODE=watch karma start ./scripts/karma-configs/test/local.js",
         "test": "karma start ./scripts/karma-configs/test/local.js --single-run --browsers ChromeHeadless",
@@ -21,11 +21,11 @@
         "karma-sauce-launcher-fix-firefox": "using a fork to work around https://github.com/karma-runner/karma-sauce-launcher/issues/275"
     },
     "devDependencies": {
-        "@lwc/compiler": "8.16.5",
-        "@lwc/engine-dom": "8.16.5",
-        "@lwc/engine-server": "8.16.5",
-        "@lwc/rollup-plugin": "8.16.5",
-        "@lwc/synthetic-shadow": "8.16.5",
+        "@lwc/compiler": "8.16.4",
+        "@lwc/engine-dom": "8.16.4",
+        "@lwc/engine-server": "8.16.4",
+        "@lwc/rollup-plugin": "8.16.4",
+        "@lwc/synthetic-shadow": "8.16.4",
         "@types/jasmine": "^5.1.7",
         "chokidar": "^4.0.3",
         "istanbul-lib-coverage": "^3.2.2",
diff --git a/packages/@lwc/integration-tests/package.json b/packages/@lwc/integration-tests/package.json
index b3277a5c38..173f839197 100644
--- a/packages/@lwc/integration-tests/package.json
+++ b/packages/@lwc/integration-tests/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@lwc/integration-tests",
     "private": true,
-    "version": "8.16.5",
+    "version": "8.16.4",
     "scripts": {
         "build": "node scripts/build.js",
         "build:dev": "MODE=dev yarn build",
@@ -18,7 +18,7 @@
         "sauce:prod:ci": "MODE=prod yarn build:prod && MODE=prod ../../../scripts/ci/retry.sh wdio ./scripts/wdio.sauce.conf.js"
     },
     "devDependencies": {
-        "@lwc/rollup-plugin": "8.16.5",
+        "@lwc/rollup-plugin": "8.16.4",
         "@wdio/cli": "^9.9.1",
         "@wdio/local-runner": "^9.9.1",
         "@wdio/mocha-framework": "^9.9.0",
@@ -27,7 +27,7 @@
         "@wdio/static-server-service": "^9.9.0",
         "deepmerge": "^4.3.1",
         "dotenv": "^16.4.7",
-        "lwc": "8.16.5",
+        "lwc": "8.16.4",
         "minimist": "^1.2.8",
         "webdriverio": "^9.0.7"
     },
diff --git a/packages/@lwc/integration-types/package.json b/packages/@lwc/integration-types/package.json
index 8006ef4f91..cdce67ff2b 100644
--- a/packages/@lwc/integration-types/package.json
+++ b/packages/@lwc/integration-types/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@lwc/integration-types",
     "private": true,
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Type validation for LWC packages",
     "type": "module",
     "scripts": {
@@ -9,8 +9,8 @@
         "playground": "rollup -c src/playground/rollup.config.js --watch"
     },
     "dependencies": {
-        "@lwc/rollup-plugin": "8.16.5",
-        "lwc": "8.16.5"
+        "@lwc/rollup-plugin": "8.16.4",
+        "lwc": "8.16.4"
     },
     "devDependencies": {
         "@rollup/plugin-replace": "^6.0.2",
diff --git a/packages/@lwc/module-resolver/package.json b/packages/@lwc/module-resolver/package.json
index 283a22e2d6..db909310ef 100644
--- a/packages/@lwc/module-resolver/package.json
+++ b/packages/@lwc/module-resolver/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/module-resolver",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Resolves paths for LWC components",
     "keywords": [
         "lwc"
diff --git a/packages/@lwc/perf-benchmarks-components/package.json b/packages/@lwc/perf-benchmarks-components/package.json
index 25a3efad74..a4857a398a 100644
--- a/packages/@lwc/perf-benchmarks-components/package.json
+++ b/packages/@lwc/perf-benchmarks-components/package.json
@@ -1,12 +1,12 @@
 {
     "name": "@lwc/perf-benchmarks-components",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "private": true,
     "scripts": {
         "build": "rm -fr dist && rollup -c ./rollup.config.mjs"
     },
     "devDependencies": {
-        "@lwc/rollup-plugin": "8.16.5"
+        "@lwc/rollup-plugin": "8.16.4"
     },
     "nx": {
         "targets": {
diff --git a/packages/@lwc/perf-benchmarks/package.json b/packages/@lwc/perf-benchmarks/package.json
index ac6a9e70c3..6781e3ac10 100644
--- a/packages/@lwc/perf-benchmarks/package.json
+++ b/packages/@lwc/perf-benchmarks/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@lwc/perf-benchmarks",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "private": true,
     "scripts": {
         "build": "rm -fr dist && rollup -c  ./rollup.config.mjs && node scripts/build.js && ./scripts/fix-deps.sh",
@@ -15,11 +15,11 @@
         "Don't forget to add these to fix-deps.sh as well."
     ],
     "dependencies": {
-        "@lwc/engine-dom": "8.16.5",
-        "@lwc/engine-server": "8.16.5",
-        "@lwc/perf-benchmarks-components": "8.16.5",
-        "@lwc/ssr-runtime": "8.16.5",
-        "@lwc/synthetic-shadow": "8.16.5"
+        "@lwc/engine-dom": "8.16.4",
+        "@lwc/engine-server": "8.16.4",
+        "@lwc/perf-benchmarks-components": "8.16.4",
+        "@lwc/ssr-runtime": "8.16.4",
+        "@lwc/synthetic-shadow": "8.16.4"
     },
     "devDependencies": {
         "@best/cli": "^14.0.0",
diff --git a/packages/@lwc/rollup-plugin/package.json b/packages/@lwc/rollup-plugin/package.json
index 19440e0779..f63f45f08f 100644
--- a/packages/@lwc/rollup-plugin/package.json
+++ b/packages/@lwc/rollup-plugin/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/rollup-plugin",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Rollup plugin to compile LWC",
     "keywords": [
         "lwc"
@@ -46,13 +46,13 @@
         }
     },
     "dependencies": {
-        "@lwc/compiler": "8.16.5",
-        "@lwc/module-resolver": "8.16.5",
-        "@lwc/shared": "8.16.5",
+        "@lwc/compiler": "8.16.4",
+        "@lwc/module-resolver": "8.16.4",
+        "@lwc/shared": "8.16.4",
         "@rollup/pluginutils": "~5.1.4"
     },
     "devDependencies": {
-        "@lwc/errors": "8.16.5"
+        "@lwc/errors": "8.16.4"
     },
     "peerDependencies": {
         "rollup": "^1.2.0||^2.0.0||^3.0.0||^4.0.0"
diff --git a/packages/@lwc/shared/package.json b/packages/@lwc/shared/package.json
index e7103a48ff..fd76a8c76d 100644
--- a/packages/@lwc/shared/package.json
+++ b/packages/@lwc/shared/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/shared",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Utilities and methods that are shared across packages",
     "keywords": [
         "lwc"
diff --git a/packages/@lwc/signals/package.json b/packages/@lwc/signals/package.json
index 88e90259bc..739da00f01 100644
--- a/packages/@lwc/signals/package.json
+++ b/packages/@lwc/signals/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/signals",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Provides the interface to interact with reactivity from outside the framework",
     "keywords": [
         "lwc"
@@ -46,6 +46,6 @@
         }
     },
     "devDependencies": {
-        "@lwc/shared": "8.16.5"
+        "@lwc/shared": "8.16.4"
     }
 }
diff --git a/packages/@lwc/ssr-client-utils/package.json b/packages/@lwc/ssr-client-utils/package.json
index 11e42ce2b2..052249efda 100644
--- a/packages/@lwc/ssr-client-utils/package.json
+++ b/packages/@lwc/ssr-client-utils/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/ssr-client-utils",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Client-side complement to @lwc/ssr-compiler",
     "keywords": [
         "lwc",
diff --git a/packages/@lwc/ssr-compiler/package.json b/packages/@lwc/ssr-compiler/package.json
index 14d66f3866..5e8c0cd0b7 100644
--- a/packages/@lwc/ssr-compiler/package.json
+++ b/packages/@lwc/ssr-compiler/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/ssr-compiler",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Compile component for use during server-side rendering",
     "keywords": [
         "compiler",
@@ -49,9 +49,9 @@
     },
     "dependencies": {
         "@babel/types": "7.26.10",
-        "@lwc/errors": "8.16.5",
-        "@lwc/shared": "8.16.5",
-        "@lwc/template-compiler": "8.16.5",
+        "@lwc/errors": "8.16.4",
+        "@lwc/shared": "8.16.4",
+        "@lwc/template-compiler": "8.16.4",
         "acorn": "8.14.1",
         "astring": "^1.9.0",
         "estree-toolkit": "^1.7.8",
@@ -59,7 +59,7 @@
         "meriyah": "^5.0.0"
     },
     "devDependencies": {
-        "@lwc/babel-plugin-component": "8.16.5",
+        "@lwc/babel-plugin-component": "8.16.4",
         "@types/estree": "^1.0.6"
     }
 }
diff --git a/packages/@lwc/ssr-runtime/package.json b/packages/@lwc/ssr-runtime/package.json
index 6c79b1cff2..ce700f77e5 100644
--- a/packages/@lwc/ssr-runtime/package.json
+++ b/packages/@lwc/ssr-runtime/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/ssr-runtime",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Runtime complement to @lwc/ssr-compiler",
     "keywords": [
         "lwc",
@@ -48,8 +48,8 @@
         }
     },
     "devDependencies": {
-        "@lwc/shared": "8.16.5",
-        "@lwc/engine-core": "8.16.5",
+        "@lwc/shared": "8.16.4",
+        "@lwc/engine-core": "8.16.4",
         "observable-membrane": "2.0.0"
     }
 }
diff --git a/packages/@lwc/style-compiler/package.json b/packages/@lwc/style-compiler/package.json
index 0c239bda82..faf5591082 100644
--- a/packages/@lwc/style-compiler/package.json
+++ b/packages/@lwc/style-compiler/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/style-compiler",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Transform style sheet to be consumed by the LWC engine",
     "keywords": [
         "lwc"
@@ -46,7 +46,7 @@
         }
     },
     "dependencies": {
-        "@lwc/shared": "8.16.5",
+        "@lwc/shared": "8.16.4",
         "postcss": "~8.5.3",
         "postcss-selector-parser": "~7.1.0",
         "postcss-value-parser": "~4.2.0"
diff --git a/packages/@lwc/synthetic-shadow/package.json b/packages/@lwc/synthetic-shadow/package.json
index 8018064ba8..569e22a0d6 100644
--- a/packages/@lwc/synthetic-shadow/package.json
+++ b/packages/@lwc/synthetic-shadow/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/synthetic-shadow",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Synthetic Shadow Root for LWC",
     "keywords": [
         "lwc"
@@ -46,8 +46,8 @@
         }
     },
     "devDependencies": {
-        "@lwc/features": "8.16.5",
-        "@lwc/shared": "8.16.5"
+        "@lwc/features": "8.16.4",
+        "@lwc/shared": "8.16.4"
     },
     "lwc": {
         "modules": [
diff --git a/packages/@lwc/template-compiler/package.json b/packages/@lwc/template-compiler/package.json
index 9628c7d273..0e298213f9 100644
--- a/packages/@lwc/template-compiler/package.json
+++ b/packages/@lwc/template-compiler/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/template-compiler",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Template compiler package",
     "keywords": [
         "lwc"
@@ -46,8 +46,8 @@
         }
     },
     "dependencies": {
-        "@lwc/errors": "8.16.5",
-        "@lwc/shared": "8.16.5",
+        "@lwc/errors": "8.16.4",
+        "@lwc/shared": "8.16.4",
         "acorn": "~8.14.1",
         "astring": "~1.9.0",
         "he": "~1.2.0"
diff --git a/packages/@lwc/types/package.json b/packages/@lwc/types/package.json
index 200f6b3c53..1aa4d7f9e2 100644
--- a/packages/@lwc/types/package.json
+++ b/packages/@lwc/types/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/types",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "keywords": [
         "lwc",
         "types",
@@ -32,6 +32,6 @@
         "*.d.ts"
     ],
     "dependencies": {
-        "@lwc/engine-core": "8.16.5"
+        "@lwc/engine-core": "8.16.4"
     }
 }
diff --git a/packages/@lwc/wire-service/package.json b/packages/@lwc/wire-service/package.json
index 8583e3ebce..d3f9d416fa 100644
--- a/packages/@lwc/wire-service/package.json
+++ b/packages/@lwc/wire-service/package.json
@@ -4,7 +4,7 @@
         "You can safely modify dependencies, devDependencies, keywords, etc., but other props will be overwritten."
     ],
     "name": "@lwc/wire-service",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "@wire service",
     "keywords": [
         "lwc"
@@ -46,8 +46,8 @@
         }
     },
     "devDependencies": {
-        "@lwc/engine-core": "8.16.5",
-        "@lwc/shared": "8.16.5"
+        "@lwc/engine-core": "8.16.4",
+        "@lwc/shared": "8.16.4"
     },
     "lwc": {
         "modules": [
diff --git a/packages/lwc/package.json b/packages/lwc/package.json
index de441590e4..fa11a30984 100644
--- a/packages/lwc/package.json
+++ b/packages/lwc/package.json
@@ -1,6 +1,6 @@
 {
     "name": "lwc",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "description": "Lightning Web Components (LWC)",
     "homepage": "https://lwc.dev/",
     "repository": {
@@ -21,24 +21,24 @@
         "!vitest.config.*"
     ],
     "dependencies": {
-        "@lwc/aria-reflection": "8.16.5",
-        "@lwc/babel-plugin-component": "8.16.5",
-        "@lwc/compiler": "8.16.5",
-        "@lwc/engine-core": "8.16.5",
-        "@lwc/engine-dom": "8.16.5",
-        "@lwc/engine-server": "8.16.5",
-        "@lwc/errors": "8.16.5",
-        "@lwc/features": "8.16.5",
-        "@lwc/module-resolver": "8.16.5",
-        "@lwc/rollup-plugin": "8.16.5",
-        "@lwc/shared": "8.16.5",
-        "@lwc/ssr-compiler": "8.16.5",
-        "@lwc/ssr-runtime": "8.16.5",
-        "@lwc/style-compiler": "8.16.5",
-        "@lwc/synthetic-shadow": "8.16.5",
-        "@lwc/template-compiler": "8.16.5",
-        "@lwc/types": "8.16.5",
-        "@lwc/wire-service": "8.16.5"
+        "@lwc/aria-reflection": "8.16.4",
+        "@lwc/babel-plugin-component": "8.16.4",
+        "@lwc/compiler": "8.16.4",
+        "@lwc/engine-core": "8.16.4",
+        "@lwc/engine-dom": "8.16.4",
+        "@lwc/engine-server": "8.16.4",
+        "@lwc/errors": "8.16.4",
+        "@lwc/features": "8.16.4",
+        "@lwc/module-resolver": "8.16.4",
+        "@lwc/rollup-plugin": "8.16.4",
+        "@lwc/shared": "8.16.4",
+        "@lwc/ssr-compiler": "8.16.4",
+        "@lwc/ssr-runtime": "8.16.4",
+        "@lwc/style-compiler": "8.16.4",
+        "@lwc/synthetic-shadow": "8.16.4",
+        "@lwc/template-compiler": "8.16.4",
+        "@lwc/types": "8.16.4",
+        "@lwc/wire-service": "8.16.4"
     },
     "lwc": {
         "modules": [
diff --git a/playground/package.json b/playground/package.json
index 948bd96298..aecb04fa5b 100644
--- a/playground/package.json
+++ b/playground/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@lwc/playground",
-    "version": "8.16.5",
+    "version": "8.16.4",
     "type": "module",
     "description": "Playground project to experiment with LWC.",
     "scripts": {
@@ -9,9 +9,9 @@
         "build": "NODE_ENV=production rollup -c"
     },
     "devDependencies": {
-        "@lwc/rollup-plugin": "8.16.5",
+        "@lwc/rollup-plugin": "8.16.4",
         "@rollup/plugin-replace": "^6.0.2",
-        "lwc": "8.16.5",
+        "lwc": "8.16.4",
         "rollup": "^4.34.8",
         "rollup-plugin-livereload": "^2.0.5",
         "rollup-plugin-serve": "^3.0.0"