diff --git a/gtk3.spec b/gtk3.spec
index 53f3087..e6bff72 100644
--- a/gtk3.spec
+++ b/gtk3.spec
@@ -12,6 +12,8 @@
 
 %global bin_version 3.0.0
 
+%global _changelog_trimtime %(date +%s -d "1 year ago")
+
 Summary: The GIMP ToolKit (GTK+), a library for creating GUIs for X
 Name: gtk3
 Version: 3.9.2