diff --git a/CHANGELOG.md b/CHANGELOG.md
index 48598012f12689f43de9e4efac832855bb5c88eb..37e79b727c53d70259679e8f68f1ca196530f537 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,5 @@
+# Version 1.67 (not yet released)
+
 # Version 1.66
 
 * Regression fix for issue #125.