diff --git a/CHANGES.md b/CHANGES.md
index 62622ec..ba98b37 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,6 @@
+5.5.0 2023-10-03
+- Score percentiles for Score API
+
 5.4.0 2023-07-26
 - Support for Verification API
 
diff --git a/sift/version.py b/sift/version.py
index db10107..e3f5976 100644
--- a/sift/version.py
+++ b/sift/version.py
@@ -1,2 +1,2 @@
-VERSION = '5.4.0'
+VERSION = '5.5.0'
 API_VERSION = '205'