diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index 5866bbfe8..ab42fe09f 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -8,7 +8,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v1
-      - uses: actions/setup-dotnet@v1
+      - uses: actions/setup-dotnet@v1.8.0
         with:
           dotnet-version: '3.1.201'