diff --git a/Packages/Interval_arithmetic/version b/Packages/Interval_arithmetic/version
index e863c269790..98f19336812 100644
--- a/Packages/Interval_arithmetic/version
+++ b/Packages/Interval_arithmetic/version
@@ -1 +1 @@
-4.78 (20 Mar 2001)
+4.79 (20 Mar 2001)