diff --git a/Mac/IDLE/config-extensions.def b/Mac/IDLE/config-extensions.def
index c17f068e2d6..1791b9c0ae7 100644
--- a/Mac/IDLE/config-extensions.def
+++ b/Mac/IDLE/config-extensions.def
@@ -86,3 +86,8 @@ bgcolor=LightGray
 fgcolor=Black
 [CodeContext_bindings]
 toggle-code-context=
+
+[RstripExtension]
+enable=1
+enable_shell=0
+enable_editor=1
diff --git a/Misc/NEWS b/Misc/NEWS
index 8058a2ff4b3..0481ddc5676 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -18,6 +18,9 @@ Library
 
 - Issue #10107: Warn about unsaved files in IDLE on OSX.
 
+- Issue #10406: Enable Rstrip IDLE extension on OSX (just like on other
+  platforms).
+
 - Issue #10478: Reentrant calls inside buffered IO objects (for example by
   way of a signal handler) now raise a RuntimeError instead of freezing the
   current process.