diff --git a/grok-versions.cfg b/grok-versions.cfg
index 44fb7ac..d44d999 100644
--- a/grok-versions.cfg
+++ b/grok-versions.cfg
@@ -18,7 +18,7 @@ grokcore.traverser = 4.0
 grokcore.view = 4.0
 grokcore.viewlet = 4.0
 grokui.base = 0.8.2
-ipython = 8.20.0
+ipython = 8.21.0
 martian = 2.0.post1
 z3c.evalexception = 4.0
 z3c.flashmessage = 3.0