diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f90abb8..1d5f1623 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+# v5.5.1 (2026-05-15)
+
+## OS Changes
+* Update kernel from 6.1.170-210.320 to 6.1.170-213.321 ([#438])
+* Update kernel from 6.12.83-113.160 to 6.12.83-115.161 ([#438])
+* Update kernel from 6.18.25-55.108 to 6.18.25-57.109 ([#438])
+
+[#438]: https://github.com/bottlerocket-os/bottlerocket-kernel-kit/pull/438
+
 # v5.5.0 (2026-05-11)
 
 ## OS Changes
diff --git a/Twoliter.toml b/Twoliter.toml
index 970c3648..327cc5b4 100644
--- a/Twoliter.toml
+++ b/Twoliter.toml
@@ -1,5 +1,5 @@
 schema-version = 2
-release-version = "5.5.0"
+release-version = "5.5.1"
 project-vendor = "Bottlerocket"
 
 [vendor.bottlerocket]