diff --git a/actions/helm/generate-docs/package-lock.json b/actions/helm/generate-docs/package-lock.json
index 4b9275ac..4f9b56e5 100644
--- a/actions/helm/generate-docs/package-lock.json
+++ b/actions/helm/generate-docs/package-lock.json
@@ -8,7 +8,7 @@
 			"dependencies": {
 				"@textlint/textlint-plugin-markdown": "^15.8.0",
 				"markdownlint-cli2": "^0.23.2",
-				"prettier": "^3.9.8",
+				"prettier": "^3.9.9",
 				"textlint": "^15.8.0",
 				"textlint-filter-rule-comments": "^1.3.0",
 				"textlint-rule-terminology": "^5.2.16"
@@ -3279,9 +3279,9 @@
 			}
 		},
 		"node_modules/prettier": {
-			"version": "3.9.8",
-			"resolved": "https://registry.npmjs.org/prettier/-/prettier-3.9.8.tgz",
-			"integrity": "sha512-WRFq3Wn3WId7LLROfMLdH7xaFr2jR62wU8nLO6rQUOLOxNZUviyJQs1M0iIhLexSFy+L+w0ch66wtoO2jRjG0A==",
+			"version": "3.9.9",
+			"resolved": "https://registry.npmjs.org/prettier/-/prettier-3.9.9.tgz",
+			"integrity": "sha512-Z/CJHIkdujO/OtN7nXUii0Rf3VT5SRuhjBA82Xvu2XhBUgX3nhP67T0LHceBdQLex7OOFGTox+Q5Yg8Jk2Qivg==",
 			"license": "MIT",
 			"bin": {
 				"prettier": "bin/prettier.cjs"
diff --git a/actions/helm/generate-docs/package.json b/actions/helm/generate-docs/package.json
index a965ea86..694ef2b9 100644
--- a/actions/helm/generate-docs/package.json
+++ b/actions/helm/generate-docs/package.json
@@ -4,7 +4,7 @@
 	"dependencies": {
 		"@textlint/textlint-plugin-markdown": "^15.8.0",
 		"markdownlint-cli2": "^0.23.2",
-		"prettier": "^3.9.8",
+		"prettier": "^3.9.9",
 		"textlint": "^15.8.0",
 		"textlint-filter-rule-comments": "^1.3.0",
 		"textlint-rule-terminology": "^5.2.16"