diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2ec208a..0c08f8b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 9.1.2
+
+### Fixes
+
+- Fix duplicate detection for normalized aggregate reports in Elasticsearch/OpenSearch (PR #666 fixes issue #665)
+
 ## 9.1.1
 
 ### Fixes
diff --git a/parsedmarc/constants.py b/parsedmarc/constants.py
index 9a2e506..da4837d 100644
--- a/parsedmarc/constants.py
+++ b/parsedmarc/constants.py
@@ -1,3 +1,3 @@
-__version__ = "9.1.1"
+__version__ = "9.1.2"
 
 USER_AGENT = f"parsedmarc/{__version__}"