diff --git a/neuropercolation/__init__.py b/neuropercolation/__init__.py
index 6b32362..ff42460 100644
--- a/neuropercolation/__init__.py
+++ b/neuropercolation/__init__.py
@@ -13,6 +13,8 @@ distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
+
+Modified 2023 by Timofej Luitle
 """
 
 from .neighborhood import Neighborhood, MooreNeighborhood, RadialNeighborhood, VonNeumannNeighborhood, \
diff --git a/neuropercolation/automaton.py b/neuropercolation/automaton.py
index 9d90cd5..9e83904 100644
--- a/neuropercolation/automaton.py
+++ b/neuropercolation/automaton.py
@@ -12,6 +12,8 @@ distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
+
+Modified 2023 by Timofej Luitle
 """
 
 from typing import Sequence
diff --git a/neuropercolation/display.py b/neuropercolation/display.py
index 80c6a52..160a4c1 100644
--- a/neuropercolation/display.py
+++ b/neuropercolation/display.py
@@ -12,6 +12,8 @@ distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
+
+Modified 2023 by Timofej Luitle
 """
 
 # pylint: disable=all