diff --git a/.github/workflows/rich-navigation.yml b/.github/workflows/rich-navigation.yml
index 432987f531f..cfc0381eead 100644
--- a/.github/workflows/rich-navigation.yml
+++ b/.github/workflows/rich-navigation.yml
@@ -16,7 +16,11 @@ jobs:
       run: yarn --frozen-lockfile
       env:
         CHILD_CONCURRENCY: 1
-    - uses: microsoft/RichCodeNavIndexer@v0.1.3
+    - name: Install .NET Core 2.2
+      uses: actions/setup-dotnet@v1.5.0
+      with:
+        dotnet-version: 2.2
+    - uses: microsoft/RichCodeNavIndexer@v0.1.2
       with:
         languages: typescript
         repo-token: ${{ secrets.GITHUB_TOKEN }}