diff --git a/pykdl_ros/package.xml b/pykdl_ros/package.xml
index e861cf4..fc670c8 100644
--- a/pykdl_ros/package.xml
+++ b/pykdl_ros/package.xml
@@ -22,6 +22,8 @@
   <test_depend>ament_pep257</test_depend>
   <test_depend>ament_xmllint</test_depend>
   <test_depend>python3-flake8-isort</test_depend>
+  <test_depend>python3-flake8-pyproject-pip</test_depend>
+  <test_depend>python3-flake8-quotes</test_depend>
   <test_depend>python3-pytest</test_depend>
 
   <export>
diff --git a/pykdl_ros/pyproject.toml b/pykdl_ros/pyproject.toml
index f821013..cfd0933 100644
--- a/pykdl_ros/pyproject.toml
+++ b/pykdl_ros/pyproject.toml
@@ -3,6 +3,10 @@ line-length = 120
 
 [tool.flake8]
 max-line-length = 120
+docstring-quotes = '"""'
+inline-quotes = '"'
+multiline-quotes = '"""'
+
 
 [tool.isort]
 combine_as_imports = true
diff --git a/tf2_pykdl_ros/package.xml b/tf2_pykdl_ros/package.xml
index dd62a16..d6ebc5e 100644
--- a/tf2_pykdl_ros/package.xml
+++ b/tf2_pykdl_ros/package.xml
@@ -26,6 +26,8 @@
   <test_depend>rclpy</test_depend>
   <test_depend>tf2_geometry_msgs</test_depend>
   <test_depend>python3-flake8-isort</test_depend>
+  <test_depend>python3-flake8-pyproject-pip</test_depend>
+  <test_depend>python3-flake8-quotes</test_depend>
   <test_depend>python3-pytest</test_depend>
 
   <export>
diff --git a/tf2_pykdl_ros/pyproject.toml b/tf2_pykdl_ros/pyproject.toml
index f821013..f3ea774 100644
--- a/tf2_pykdl_ros/pyproject.toml
+++ b/tf2_pykdl_ros/pyproject.toml
@@ -3,6 +3,9 @@ line-length = 120
 
 [tool.flake8]
 max-line-length = 120
+docstring-quotes = '"""'
+inline-quotes = '"'
+multiline-quotes = '"""'
 
 [tool.isort]
 combine_as_imports = true
diff --git a/tf2_pykdl_ros/test/test_flake8.py b/tf2_pykdl_ros/test/test_flake8.py
index 39b6b72..6a05cb1 100644
--- a/tf2_pykdl_ros/test/test_flake8.py
+++ b/tf2_pykdl_ros/test/test_flake8.py
@@ -19,5 +19,5 @@
 @pytest.mark.flake8
 @pytest.mark.linter
 def test_flake8() -> None:
-    rc, errors = main_with_errors(argv=["--linelength", "120"])
+    rc, errors = main_with_errors(argv=["--docstring-quotes", '"""', "--inline-quotes", '"', "--linelength", "120", "--multiline-quotes", '"""'])
     assert rc == 0, "Found %d code style errors / warnings:\n" % len(errors) + "\n".join(errors)