diff --git a/.github/workflows/build_and_publish.yml b/.github/workflows/build_and_publish.yml
index 5dd19985..5a5f6ed1 100644
--- a/.github/workflows/build_and_publish.yml
+++ b/.github/workflows/build_and_publish.yml
@@ -41,13 +41,13 @@ jobs:
           pip install -e .
 
       - name: Run mypy
-        run: mypy src
+        run: mypy src/hssm
 
-      - name: Check styling
-        run: black . --check
+      - name: Check formatting
+        run: ruff format --check .
 
       - name: Linting
-        run: ruff check .
+        run: ruff check src/hssm
 
       - name: Run tests
         run: pytest -n auto -s
diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index a143656e..3708c2c5 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -39,13 +39,13 @@ jobs:
           pip install -e .
 
       - name: Run mypy
-        run: mypy src
+        run: mypy src/hssm
 
-      - name: Check styling
-        run: black . --check
+      - name: Check formatting
+        run: ruff format --check .
 
       - name: Linting
-        run: ruff check .
+        run: ruff check src/hssm
 
       - name: Run tests
         run: pytest -n auto -s
diff --git a/pyproject.toml b/pyproject.toml
index 4ef08e0a..c0dd632d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -150,7 +150,7 @@ ignore = [
     "TID252",
 ]
 
-exclude = [".github", "docs", "notebook", "tests"]
+exclude = [".github", "docs", "notebook", "tests/*"]
 
 [tool.ruff.lint.pydocstyle]
 convention = "numpy"