diff --git a/automoc.spec b/automoc.spec
index 45c593a..514075f 100644
--- a/automoc.spec
+++ b/automoc.spec
@@ -2,6 +2,9 @@
 %define beta 0.9.88
 %define beta_tag rc3
 
+# trim changelog included in binary rpms
+%global _changelog_trimtime %(date +%s -d "1 year ago")
+
 Name:           automoc
 Version:        1.0
 Release:        0.24.%{?beta_tag}%{?dist}