diff --git a/mise.toml b/mise.toml
index c9af60c..db86ee6 100644
--- a/mise.toml
+++ b/mise.toml
@@ -17,7 +17,7 @@ shellcheck = "0.10.0"
 shfmt = "3.11.0"
 
 # Renovate: datasource=github-releases packageName=google/yamlfmt
-yamlfmt = "0.17.1"
+yamlfmt = "0.21.0"
 
 #
 # Tools with explicit backends.