diff --git a/.mise/config.toml b/.mise/config.toml
index c16e4a8..ff40210 100644
--- a/.mise/config.toml
+++ b/.mise/config.toml
@@ -44,7 +44,7 @@ lefthook = "2.1.10"
 # `oxfmt` is distributed only via the npm backend (`mise registry oxfmt` →
 # `npm:oxfmt`); node is pinned above, so the npm backend always uses mise's
 # own node+npm rather than whatever is on PATH.
-oxfmt = "0.64.0"
+oxfmt = "0.66.0"
 # The shared pre-commit hooks run zizmor on staged workflow files and
 # shellcheck on staged *.sh files; pin both so the hooks resolve binaries.
 zizmor = "1.29.0"
diff --git a/.mise/mise.lock b/.mise/mise.lock
index 51bc432..59cd53a 100644
--- a/.mise/mise.lock
+++ b/.mise/mise.lock
@@ -128,7 +128,7 @@ checksum = "sha256:0ae68406b42d7725661da979b1403ec9926da205c6770827f33aac9d8f26e
 url = "https://nodejs.org/dist/v24.18.0/node-v24.18.0-win-x64.zip"
 
 [[tools.oxfmt]]
-version = "0.64.0"
+version = "0.66.0"
 backend = "npm:oxfmt"
 
 [[tools.pnpm]]