diff --git a/.github/workflows/ut-analysis.yml b/.github/workflows/ut-analysis.yml
index 29514413..e2092afa 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
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics --exclude=titanlearn.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
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics --exclude=titanlearn.py
       working-directory: ${{ env.working-directory }}
     - name: Test with pytest
       run: |
diff --git a/.github/workflows/ut-superscript.yml b/.github/workflows/ut-superscript.yml
index 0991546d..8d215632 100644
--- a/.github/workflows/ut-superscript.yml
+++ b/.github/workflows/ut-superscript.yml
@@ -15,11 +15,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8]
+        python-version: [3.7, 3.8]
 
-    defaults:
-      run:
-        working-directory: /data-analysis/
+    env:
+      working-directory: ./data-analysis/
 
     steps:
     - uses: actions/checkout@v2
@@ -32,12 +31,15 @@ jobs:
         python -m pip install --upgrade pip
         pip install flake8 pytest
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+      working-directory: ${{ env.working-directory }}
     - 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
         # 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
+      working-directory: ${{ env.working-directory }}
     - name: Test with pytest
       run: |
         pytest unit-test.py
+      working-directory: ${{ env.working-directory }}