diff --git a/.github/actions/build-vsix/action.yml b/.github/actions/build-vsix/action.yml
index a3b9d0312afe..318dd5b8da15 100644
--- a/.github/actions/build-vsix/action.yml
+++ b/.github/actions/build-vsix/action.yml
@@ -37,5 +37,8 @@ runs:
     - run: npm run addExtensionDependencies
       shell: bash
 
+    - run: npm run addExtensionPackDependencies
+      shell: bash
+
     - run: npm run package
       shell: bash
diff --git a/gulpfile.js b/gulpfile.js
index 7ea0c9f9b4aa..9c7c16e9a28f 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -81,6 +81,10 @@ gulp.task('addExtensionDependencies', async () => {
     await addExtensionDependencies();
 });
 
+gulp.task('addExtensionPackDependencies', async () => {
+    await addExtensionPackDependencies();
+});
+
 async function addExtensionDependencies() {
     // Update the package.json to add extension dependencies at build time so that
     // extension dependencies need not be installed during development
@@ -92,6 +96,17 @@ async function addExtensionDependencies() {
     await fsExtra.writeFile('package.json', JSON.stringify(packageJson, null, 4), 'utf-8');
 }
 
+async function addExtensionPackDependencies() {
+    // Update the package.json to add extension pack dependencies at build time so that
+    // extension dependencies need not be installed during development
+    const packageJsonContents = await fsExtra.readFile('package.json', 'utf-8');
+    const packageJson = JSON.parse(packageJsonContents);
+    packageJson.extensionPack = ['ms-python.vscode-pylance'].concat(
+        packageJson.extensionPack ? packageJson.extensionPack : [],
+    );
+    await fsExtra.writeFile('package.json', JSON.stringify(packageJson, null, 4), 'utf-8');
+}
+
 gulp.task('updateBuildNumber', async () => {
     await updateBuildNumber(argv);
 });
diff --git a/package.json b/package.json
index de0b7c5775c1..1d3b03029875 100644
--- a/package.json
+++ b/package.json
@@ -2050,6 +2050,7 @@
         "format-fix": "prettier --write 'src/**/*.ts' 'src/**/*.tsx' 'build/**/*.js' '.github/**/*.yml' gulpfile.js",
         "clean": "gulp clean",
         "addExtensionDependencies": "gulp addExtensionDependencies",
+        "addExtensionPackDependencies": "gulp addExtensionPackDependencies",
         "updateBuildNumber": "gulp updateBuildNumber",
         "verifyBundle": "gulp verifyBundle",
         "webpack": "webpack"