Fix "seperate".
diff --git a/Doc/library/concurrent.futures.rst b/Doc/library/concurrent.futures.rst
index a7a2c39..3b74aa8 100644
--- a/Doc/library/concurrent.futures.rst
+++ b/Doc/library/concurrent.futures.rst
@@ -10,7 +10,7 @@
asynchronously executing callables.
The asynchronous execution can be be performed with threads, using
-:class:`ThreadPoolExecutor`, or seperate processes, using
+:class:`ThreadPoolExecutor`, or separate processes, using
:class:`ProcessPoolExecutor`. Both implement the same interface, which is
defined by the abstract :class:`Executor` class.