diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4da424e..a946e930 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 `tombi@latest` to 0.9.15.
+
 ## [2.74.0] - 2026-04-06
 
 - Support `cargo-deb`. ([#1669](https://github.com/taiki-e/install-action/pull/1669))
diff --git a/manifests/tombi.json b/manifests/tombi.json
index af08ef0f..2033872c 100644
--- a/manifests/tombi.json
+++ b/manifests/tombi.json
@@ -22,10 +22,10 @@
   },
   "license_markdown": "[MIT](https://github.com/tombi-toml/tombi/blob/main/LICENSE)",
   "latest": {
-    "version": "0.9.14"
+    "version": "0.9.15"
   },
   "0.9": {
-    "version": "0.9.14"
+    "version": "0.9.15"
   },
   "0.9.15": {
     "x86_64_linux_musl": {