diff --git a/CHANGELOG.md b/CHANGELOG.md
index 78e5a5d7..0935bfb8 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 `vacuum@latest` to 0.26.6.
+
 ## [2.79.5] - 2026-05-22
 
 - Update `jaq@latest` to 3.0.0. ([#1861](https://github.com/taiki-e/install-action/pull/1861), thanks @MusicalNinjaDad)
diff --git a/manifests/vacuum.json b/manifests/vacuum.json
index c66beab8..2a085cbd 100644
--- a/manifests/vacuum.json
+++ b/manifests/vacuum.json
@@ -21,10 +21,10 @@
     }
   },
   "latest": {
-    "version": "0.26.5"
+    "version": "0.26.6"
   },
   "0.26": {
-    "version": "0.26.5"
+    "version": "0.26.6"
   },
   "0.26.6": {
     "x86_64_linux_musl": {