diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 67ae0645bb..631a62a69c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -55,15 +55,15 @@ jobs:
       uses: codecov/codecov-action@v1
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
-        file: ./coverage.xml
+        files: ./coverage.xml
         flags: unittests
 
     - name: Report core project coverage with Codecov (contributors)
       # Run on pull_request events if PR comes from contributor fork
       if: github.repository != 'scikit-hep/pyhf' && github.event_name == 'pull_request' && matrix.python-version == 3.9 && matrix.os == 'ubuntu-latest'
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v2
       with:
-        file: ./coverage.xml
+        files: ./coverage.xml
         flags: unittests
 
     - name: Test Contrib module with pytest
@@ -76,15 +76,15 @@ jobs:
       uses: codecov/codecov-action@v1
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
-        file: ./coverage.xml
+        files: ./coverage.xml
         flags: contrib
 
     - name: Report contrib coverage with Codecov (contributors)
       # Run on pull_request events if PR comes from contributor fork
       if: github.repository != 'scikit-hep/pyhf' && github.event_name == 'pull_request' && matrix.python-version == 3.9 && matrix.os == 'ubuntu-latest'
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v2
       with:
-        file: ./coverage.xml
+        files: ./coverage.xml
         flags: contrib
 
     - name: Run benchmarks