diff --git a/changelog.txt b/changelog.txt
index 02be9ba8..7635b993 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,6 +1,8 @@
 OPENSEADRAGON CHANGELOG
 =======================
 
+6.0.0: (in progress...)
+
 5.0.1:
 
 * Improved overlay handling so it plays better with other libraries (#2582 @BeebBenjamin)