diff --git a/1.18.0/columns-in-columns/requirements.txt b/1.18.0/columns_in_columns/requirements.txt
similarity index 100%
rename from 1.18.0/columns-in-columns/requirements.txt
rename to 1.18.0/columns_in_columns/requirements.txt
diff --git a/1.18.0/columns-in-columns/streamlit_app.py b/1.18.0/columns_in_columns/streamlit_app.py
similarity index 100%
rename from 1.18.0/columns-in-columns/streamlit_app.py
rename to 1.18.0/columns_in_columns/streamlit_app.py