diff --git a/CHANGES b/CHANGES
index 70901fac7..c8fdc389d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -32,6 +32,8 @@ Bugs fixed
 * #4038: C, add missing documentation of ``member`` role.
 * #4044: An empty multicolumn cell causes extra row height in PDF output
 * #4049: Fix typo in output of sphinx-build -h
+* #4062: hashlib.sha1() must take bytes, not unicode on Python 3
+
 
 Testing
 --------