diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index 809b3db..62144c5 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -83,6 +83,7 @@ jobs:
         uses: ./
         with:
           dotnet-version: '3.1'
+          source-url: https://api.nuget.org/v3/index.json
       - name: Verify dotnet
         if: runner.os != 'windows'
         run: __tests__/verify-dotnet.sh 3.1
@@ -107,6 +108,7 @@ jobs:
         uses: ./
         with:
           dotnet-version: 3.1.x
+          source-url: https://api.nuget.org/v3/index.json
       - name: Verify dotnet
         if: runner.os != 'windows'
         run: __tests__/verify-dotnet.sh 3.1
@@ -131,6 +133,7 @@ jobs:
         uses: ./
         with:
           dotnet-version: 3.1.*
+          source-url: https://api.nuget.org/v3/index.json
       - name: Verify dotnet
         if: runner.os != 'windows'
         run: __tests__/verify-dotnet.sh 3.1