diff --git a/ArduCopter/ReleaseNotes.txt b/ArduCopter/ReleaseNotes.txt
index 010ffe8552..86f82e9d28 100644
--- a/ArduCopter/ReleaseNotes.txt
+++ b/ArduCopter/ReleaseNotes.txt
@@ -1,6 +1,6 @@
 ArduPilot Copter Release Notes:
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-Copter 4.0.0-rc6 28-Dec-2019
+Copter 4.0.0 29-Dec-2019 / 4.0.0-rc6 28-Dec-2019
 Changes from 4.0.0-rc5
 1) Compiler updated to gcc 6.3.1 (2nd attempt)
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