diff --git a/custom-ktlint-rules/build.gradle b/custom-ktlint-rules/build.gradle
index d28028fd..be12aa7d 100644
--- a/custom-ktlint-rules/build.gradle
+++ b/custom-ktlint-rules/build.gradle
@@ -5,7 +5,7 @@ plugins {
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(11)
+        languageVersion = JavaLanguageVersion.of(17)
     }
 }