#11985: update docstring of platform.python_implementation.
diff --git a/Lib/platform.py b/Lib/platform.py
index 3181303..6db7f19 100755
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -1448,9 +1448,10 @@
""" Returns a string identifying the Python implementation.
Currently, the following implementations are identified:
- 'CPython' (C implementation of Python),
- 'IronPython' (.NET implementation of Python),
- 'Jython' (Java implementation of Python).
+ 'CPython' (C implementation of Python),
+ 'IronPython' (.NET implementation of Python),
+ 'Jython' (Java implementation of Python),
+ 'PyPy' (Python implementation of Python).
"""
return _sys_version()[0]