diff --git a/.github/workflows/docfx.yaml b/.github/workflows/docfx.yaml
index 9f565f32..b437c1b5 100644
--- a/.github/workflows/docfx.yaml
+++ b/.github/workflows/docfx.yaml
@@ -39,7 +39,7 @@ jobs:
     - name: Build
       run: dotnet build -c Release
 
-    - uses: nunit/docfx-action@v3.4.2
+    - uses: nunit/docfx-action@v4.0.0
       name: Build Documentation
       with:
         args: doc/docfx.json