diff --git a/package-lock.json b/package-lock.json
index 0874de32a2..c756b1a6d4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@google/gemini-cli",
-  "version": "0.21.0-nightly.20251219.70696e364",
+  "version": "0.21.0-nightly.20251220.41a1a3eed",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@google/gemini-cli",
-      "version": "0.21.0-nightly.20251219.70696e364",
+      "version": "0.21.0-nightly.20251220.41a1a3eed",
       "workspaces": [
         "packages/*"
       ],
@@ -18473,7 +18473,7 @@
     },
     "packages/a2a-server": {
       "name": "@google/gemini-cli-a2a-server",
-      "version": "0.21.0-nightly.20251219.70696e364",
+      "version": "0.21.0-nightly.20251220.41a1a3eed",
       "dependencies": {
         "@a2a-js/sdk": "^0.3.7",
         "@google-cloud/storage": "^7.16.0",
@@ -18783,7 +18783,7 @@
     },
     "packages/cli": {
       "name": "@google/gemini-cli",
-      "version": "0.21.0-nightly.20251219.70696e364",
+      "version": "0.21.0-nightly.20251220.41a1a3eed",
       "license": "Apache-2.0",
       "dependencies": {
         "@agentclientprotocol/sdk": "^0.11.0",
@@ -18886,7 +18886,7 @@
     },
     "packages/core": {
       "name": "@google/gemini-cli-core",
-      "version": "0.21.0-nightly.20251219.70696e364",
+      "version": "0.21.0-nightly.20251220.41a1a3eed",
       "license": "Apache-2.0",
       "dependencies": {
         "@google-cloud/logging": "^11.2.1",
@@ -19026,7 +19026,7 @@
     },
     "packages/test-utils": {
       "name": "@google/gemini-cli-test-utils",
-      "version": "0.21.0-nightly.20251219.70696e364",
+      "version": "0.21.0-nightly.20251220.41a1a3eed",
       "license": "Apache-2.0",
       "devDependencies": {
         "typescript": "^5.3.3"
@@ -19037,7 +19037,7 @@
     },
     "packages/vscode-ide-companion": {
       "name": "gemini-cli-vscode-ide-companion",
-      "version": "0.21.0-nightly.20251219.70696e364",
+      "version": "0.21.0-nightly.20251220.41a1a3eed",
       "license": "LICENSE",
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.23.0",
diff --git a/package.json b/package.json
index 4f3064cfc3..5a2ba150ee 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google/gemini-cli",
-  "version": "0.21.0-nightly.20251219.70696e364",
+  "version": "0.21.0-nightly.20251220.41a1a3eed",
   "engines": {
     "node": ">=20.0.0"
   },
@@ -14,7 +14,7 @@
     "url": "git+https://github.com/google-gemini/gemini-cli.git"
   },
   "config": {
-    "sandboxImageUri": "us-docker.pkg.dev/gemini-code-dev/gemini-cli/sandbox:0.21.0-nightly.20251219.70696e364"
+    "sandboxImageUri": "us-docker.pkg.dev/gemini-code-dev/gemini-cli/sandbox:0.21.0-nightly.20251220.41a1a3eed"
   },
   "scripts": {
     "start": "cross-env NODE_ENV=development node scripts/start.js",
diff --git a/packages/a2a-server/package.json b/packages/a2a-server/package.json
index 1f31db34e1..f7f2e35176 100644
--- a/packages/a2a-server/package.json
+++ b/packages/a2a-server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google/gemini-cli-a2a-server",
-  "version": "0.21.0-nightly.20251219.70696e364",
+  "version": "0.21.0-nightly.20251220.41a1a3eed",
   "description": "Gemini CLI A2A Server",
   "repository": {
     "type": "git",
diff --git a/packages/cli/package.json b/packages/cli/package.json
index 29841793c3..b1b856206f 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google/gemini-cli",
-  "version": "0.21.0-nightly.20251219.70696e364",
+  "version": "0.21.0-nightly.20251220.41a1a3eed",
   "description": "Gemini CLI",
   "license": "Apache-2.0",
   "repository": {
@@ -26,7 +26,7 @@
     "dist"
   ],
   "config": {
-    "sandboxImageUri": "us-docker.pkg.dev/gemini-code-dev/gemini-cli/sandbox:0.21.0-nightly.20251219.70696e364"
+    "sandboxImageUri": "us-docker.pkg.dev/gemini-code-dev/gemini-cli/sandbox:0.21.0-nightly.20251220.41a1a3eed"
   },
   "dependencies": {
     "@agentclientprotocol/sdk": "^0.11.0",
diff --git a/packages/core/package.json b/packages/core/package.json
index c543c72ce3..91576ba3b3 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google/gemini-cli-core",
-  "version": "0.21.0-nightly.20251219.70696e364",
+  "version": "0.21.0-nightly.20251220.41a1a3eed",
   "description": "Gemini CLI Core",
   "license": "Apache-2.0",
   "repository": {
diff --git a/packages/test-utils/package.json b/packages/test-utils/package.json
index 36978f37e6..4a1d17b088 100644
--- a/packages/test-utils/package.json
+++ b/packages/test-utils/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google/gemini-cli-test-utils",
-  "version": "0.21.0-nightly.20251219.70696e364",
+  "version": "0.21.0-nightly.20251220.41a1a3eed",
   "private": true,
   "main": "src/index.ts",
   "license": "Apache-2.0",
diff --git a/packages/vscode-ide-companion/package.json b/packages/vscode-ide-companion/package.json
index 6f46da225a..6a7b7c471e 100644
--- a/packages/vscode-ide-companion/package.json
+++ b/packages/vscode-ide-companion/package.json
@@ -2,7 +2,7 @@
   "name": "gemini-cli-vscode-ide-companion",
   "displayName": "Gemini CLI Companion",
   "description": "Enable Gemini CLI with direct access to your IDE workspace.",
-  "version": "0.21.0-nightly.20251219.70696e364",
+  "version": "0.21.0-nightly.20251220.41a1a3eed",
   "publisher": "google",
   "icon": "assets/icon.png",
   "repository": {