diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2aac5f81..8c76a478 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,8 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
+- Update `cyclonedx@latest` to 0.31.0.
+
 - Update `tombi@latest` to 0.9.26.
 
 ## [2.75.27] - 2026-04-30
diff --git a/manifests/cyclonedx.json b/manifests/cyclonedx.json
index 65d245ce..7baeed21 100644
--- a/manifests/cyclonedx.json
+++ b/manifests/cyclonedx.json
@@ -21,7 +21,10 @@
     }
   },
   "latest": {
-    "version": "0.30.0"
+    "version": "0.31.0"
+  },
+  "0.31": {
+    "version": "0.31.0"
   },
   "0.31.0": {
     "x86_64_linux_gnu": {