diff --git a/src/dataframe/mod.rs b/src/dataframe/mod.rs
new file mode 100644
index 0000000..8fb4cb2
--- /dev/null
+++ b/src/dataframe/mod.rs
@@ -0,0 +1,2 @@
+//! This module provides the DataFrame structure for handling tabular data with mixed types.
+pub mod df;
diff --git a/src/lib.rs b/src/lib.rs
index a68c8c9..1eb448b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,8 @@
 #![doc = include_str!("../README.md")]
 
+/// Documentation for the [`crate::dataframe`] module.
+pub mod dataframe;
+
 /// Documentation for the [`crate::matrix`] module.
 pub mod matrix;