diff --git a/build/azure-pipeline.stable.yml b/build/azure-pipeline.stable.yml
index 37c63cf067fb..c68dacc7db80 100644
--- a/build/azure-pipeline.stable.yml
+++ b/build/azure-pipeline.stable.yml
@@ -92,8 +92,8 @@ extends:
         displayName: Build
 
       - bash: |
-            mkdir -p $(Build.SourcesDirectory)/python-env-tools/bin
-            chmod +x $(Build.SourcesDirectory)/python-env-tools/bin
+          mkdir -p $(Build.SourcesDirectory)/python-env-tools/bin
+          chmod +x $(Build.SourcesDirectory)/python-env-tools/bin
         displayName: Make Directory for python-env-tool binary
 
       - bash: |
@@ -124,30 +124,30 @@ extends:
 
       - task: DownloadPipelineArtifact@2
         inputs:
-            buildType: 'specific'
-            project: 'Monaco'
-            definition: 593
-            buildVersionToDownload: 'latestFromBranch'
-            branchName: 'refs/heads/release/2025.10'
-            targetPath: '$(Build.SourcesDirectory)/python-env-tools/bin'
-            artifactName: 'bin-$(buildTarget)'
-            itemPattern: |
-              pet.exe
-              pet
-              ThirdPartyNotices.txt
+          buildType: 'specific'
+          project: 'Monaco'
+          definition: 593
+          buildVersionToDownload: 'latestFromBranch'
+          branchName: 'refs/heads/release/2025.12'
+          targetPath: '$(Build.SourcesDirectory)/python-env-tools/bin'
+          artifactName: 'bin-$(buildTarget)'
+          itemPattern: |
+            pet.exe
+            pet
+            ThirdPartyNotices.txt
 
       - bash: |
-            ls -lf ./python-env-tools/bin
-            chmod +x ./python-env-tools/bin/pet*
-            ls -lf ./python-env-tools/bin
+          ls -lf ./python-env-tools/bin
+          chmod +x ./python-env-tools/bin/pet*
+          ls -lf ./python-env-tools/bin
         displayName: Set chmod for pet binary
 
       - script: python -c "import shutil; shutil.rmtree('.nox', ignore_errors=True)"
         displayName: Clean up Nox
     tsa:
-        config:
-            areaPath: 'Visual Studio Code Python Extensions'
-            serviceTreeID: '6e6194bc-7baa-4486-86d0-9f5419626d46'
-        enabled: true
+      config:
+        areaPath: 'Visual Studio Code Python Extensions'
+        serviceTreeID: '6e6194bc-7baa-4486-86d0-9f5419626d46'
+      enabled: true
     apiScanDependentPipelineId: '593' # python-environment-tools
     apiScanSoftwareVersion: '2024'
diff --git a/package-lock.json b/package-lock.json
index 99f39a10d6f4..4345047b8e3b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "python",
-    "version": "2025.11.0-dev",
+    "version": "2025.12.0",
     "lockfileVersion": 2,
     "requires": true,
     "packages": {
         "": {
             "name": "python",
-            "version": "2025.11.0-dev",
+            "version": "2025.12.0",
             "license": "MIT",
             "dependencies": {
                 "@iarna/toml": "^2.2.5",
diff --git a/package.json b/package.json
index 66eceab34d69..2f138943d9e0 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "python",
     "displayName": "Python",
     "description": "Python language support with extension access points for IntelliSense (Pylance), Debugging (Python Debugger), linting, formatting, refactoring, unit tests, and more.",
-    "version": "2025.11.0-dev",
+    "version": "2025.12.0",
     "featureFlags": {
         "usingNewInterpreterStorage": true
     },