diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6aaca544..ac7673fc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 Changelog
 =========
 
+8.20.0
+------
+
+- Normalize aggregate DMARC report volumes when a report timespan exceeds 27 hours
+
+
 8.19.1
 ------
 
diff --git a/parsedmarc/constants.py b/parsedmarc/constants.py
index 94a103a9..4dbcb476 100644
--- a/parsedmarc/constants.py
+++ b/parsedmarc/constants.py
@@ -1,2 +1,2 @@
-__version__ = "8.19.1"
+__version__ = "8.20.0"
 USER_AGENT = f"parsedmarc/{__version__}"