diff --git a/doc/contrib/python_packaging.rst b/doc/contrib/python_packaging.rst
index 5cf0856851d9..ebd9d36ec10f 100644
--- a/doc/contrib/python_packaging.rst
+++ b/doc/contrib/python_packaging.rst
@@ -35,7 +35,7 @@ Building sdists
 
 In the case of XGBoost, an sdist contains both the Python code as well as
 the C++ code, so that the core part of XGBoost can be compiled into the
-shared libary ``libxgboost.so`` [#shared_lib_name]_.
+shared library ``libxgboost.so`` [#shared_lib_name]_.
 
 You can obtain an sdist as follows: