diff --git a/Packages/Interval_arithmetic/version b/Packages/Interval_arithmetic/version
index 7b0915e7097..94379ae152f 100644
--- a/Packages/Interval_arithmetic/version
+++ b/Packages/Interval_arithmetic/version
@@ -1 +1 @@
-2.2 (16 October 1998)
+2.3 (23 October 1998)