diff --git a/.github/workflows/ut-analysis.yml b/.github/workflows/ut-analysis.yml
index e2092afa..81f55601 100644
--- a/.github/workflows/ut-analysis.yml
+++ b/.github/workflows/ut-analysis.yml
@@ -35,9 +35,9 @@ jobs:
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics --exclude=titanlearn.py
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics --exclude=titanlearn.py,regression.py
         # 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 --exclude=titanlearn.py
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics --exclude=titanlearn.py,regression.py
       working-directory: ${{ env.working-directory }}
     - name: Test with pytest
       run: |
diff --git a/data-analysis/unit-test.py b/data-analysis/unit-test.py
index e69de29b..d2a8f744 100644
--- a/data-analysis/unit-test.py
+++ b/data-analysis/unit-test.py
@@ -0,0 +1 @@
+assert True == True
\ No newline at end of file