diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7481cad9..c0cd9894 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Optimizely Swift SDK Changelog
 
+## 5.5.1
+October 7, 2026
+
+### SPM support
+
+- Add swift SPM support
+
 ## 5.5.0
 September 2, 2026
 
diff --git a/Sources/Utils/SDKVersion.swift b/Sources/Utils/SDKVersion.swift
index 605f8b1a..831bbe49 100644
--- a/Sources/Utils/SDKVersion.swift
+++ b/Sources/Utils/SDKVersion.swift
@@ -17,4 +17,4 @@
 /// Do not edit this field outside a release PR.
 /// - Merging a change to this value into master (or release/**) publishes a GitHub release (.github/workflows/release.yml)
 /// - Do not put underscores in the name (Swiftlint can modify unexpectedly)
-let OPTIMIZELYSDKVERSION = "5.5.0"
+let OPTIMIZELYSDKVERSION = "5.5.1"