diff --git a/CHANGELOG.md b/CHANGELOG.md
index de2fc5eb..3a9d15ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## Unreleased
+## 10.4.0
 
 ### New features
 
diff --git a/parsedmarc/constants.py b/parsedmarc/constants.py
index 1fa11645..509c7fb0 100644
--- a/parsedmarc/constants.py
+++ b/parsedmarc/constants.py
@@ -1,4 +1,4 @@
-__version__ = "10.3.0"
+__version__ = "10.4.0"
 
 USER_AGENT = f"parsedmarc/{__version__}"