diff --git a/.github/workflows/common-ci.yml b/.github/workflows/common-ci.yml
index 4243f5a..505f6bc 100644
--- a/.github/workflows/common-ci.yml
+++ b/.github/workflows/common-ci.yml
@@ -35,7 +35,13 @@ jobs:
         run: go mod download
       - name: Run tests
         working-directory: ${{ inputs.module }}
-        run: go test -v -race -failfast -coverpkg=./... -covermode=atomic -coverprofile=coverage.txt ./...
+        run: go test -v -race -failfast -coverpkg=./... -covermode=atomic -coverprofile=coverage.tmp.out ./...
+      - name: Exclude testdata
+        working-directory: ${{ inputs.module }}
+        run: cat coverage.tmp.out | grep -v "testdata" > coverage.out
+      - name: Clean temp coverage
+        working-directory: ${{ inputs.module }}
+        run: rm coverage.tmp.out
       - name: Codecov
         uses: codecov/codecov-action@v3
         with: