diff --git a/Packages/Interval_arithmetic/changes.txt b/Packages/Interval_arithmetic/changes.txt
index 1671ffe85a6..dcaf5a2fb1e 100644
--- a/Packages/Interval_arithmetic/changes.txt
+++ b/Packages/Interval_arithmetic/changes.txt
@@ -1,4 +1,4 @@
-Version 4.136 on 21 March 2002
+Version 4.135 on 21 March 2002
 - Remove lexicographical_sign stuff.
 
 Version 4.134 on 20 March 2002