Prepare for 2.5.4.
diff --git a/Lib/idlelib/idlever.py b/Lib/idlelib/idlever.py
index 1ffd7a7..385327d 100644
--- a/Lib/idlelib/idlever.py
+++ b/Lib/idlelib/idlever.py
@@ -1 +1 @@
-IDLE_VERSION = "1.2.3"
+IDLE_VERSION = "1.2.4"