diff --git a/CHANGELOG.md b/CHANGELOG.md
index b20e01b5..3dbddcbd 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 `martin@latest` to 1.9.1.
+
 - Update `tombi@latest` to 0.11.2.
 
 ## [2.77.7] - 2026-05-13
diff --git a/manifests/martin.json b/manifests/martin.json
index c811c6fd..84e27457 100644
--- a/manifests/martin.json
+++ b/manifests/martin.json
@@ -31,13 +31,13 @@
     }
   },
   "latest": {
-    "version": "1.9.0"
+    "version": "1.9.1"
   },
   "1": {
-    "version": "1.9.0"
+    "version": "1.9.1"
   },
   "1.9": {
-    "version": "1.9.0"
+    "version": "1.9.1"
   },
   "1.9.1": {
     "x86_64_linux_musl": {