diff --git a/CHANGELOG.md b/CHANGELOG.md
index eafc867e..832aaccb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,5 @@
+# Unreleased
+
 # 0.22.0 (2020-03-09)
 
 - On Windows, fix minor timing issue in wait_until_time_or_msg