diff --git a/.coveragerc b/.coveragerc
index ca97263d23..1d8d57370d 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -2,4 +2,4 @@
 branch = True
 source = flaml
 omit =
-  *tests*
\ No newline at end of file
+  *test*
\ No newline at end of file
diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index a3a570472d..7cef0a948b 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -7,7 +7,7 @@ on:
   push:
     branches: ['main']
   pull_request:
-    branches: ['*']
+    branches: ['main']
 
 jobs:
   build:
@@ -49,13 +49,17 @@ jobs:
           # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
           flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
       - name: Test with pytest
+        if: ${{ matrix.python-version != '3.7' || matrix.os == 'macos-latest' }}
         run: |
           pytest test
       - name: Coverage
+        if: ${{ matrix.python-version == '3.7' && matrix.os != 'macos-latest' }}
         run: |
+          pip install coverage
           coverage run -a -m pytest test
           coverage xml
       - name: Upload coverage to Codecov
+        if: ${{ matrix.python-version == '3.7' && matrix.os != 'macos-latest' }}
         uses: codecov/codecov-action@v1
         with:
           file: ./coverage.xml