diff --git a/src/pip/_internal/distributions/__init__.py b/src/pip/_internal/distributions/__init__.py
index 20ffe2b32b5..d5c1afc5bc1 100644
--- a/src/pip/_internal/distributions/__init__.py
+++ b/src/pip/_internal/distributions/__init__.py
@@ -1,4 +1,4 @@
-from pip._internal.distributions.source import SourceDistribution
+from pip._internal.distributions.sdist import SourceDistribution
 from pip._internal.distributions.wheel import WheelDistribution
 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
 
diff --git a/src/pip/_internal/distributions/source.py b/src/pip/_internal/distributions/sdist.py
similarity index 100%
rename from src/pip/_internal/distributions/source.py
rename to src/pip/_internal/distributions/sdist.py