diff --git a/setup.py b/setup.py
index 4924bf0..7dc4039 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
     ],
-    package_dir={"": "stannum"},
-    packages=setuptools.find_packages(where="stannum"),
+    package_dir={"": "src"},
+    packages=setuptools.find_packages(where="src"),
     python_requires=">=3.6",
 )
diff --git a/stannum/__init__.py b/src/stannum/__init__.py
similarity index 100%
rename from stannum/__init__.py
rename to src/stannum/__init__.py
diff --git a/stannum/stannum.py b/src/stannum/stannum.py
similarity index 100%
rename from stannum/stannum.py
rename to src/stannum/stannum.py
diff --git a/stannum/utils.py b/src/stannum/utils.py
similarity index 100%
rename from stannum/utils.py
rename to src/stannum/utils.py