diff --git a/build.gradle.kts b/build.gradle.kts
index 08b69b8..c4144d3 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -125,7 +125,7 @@ configurations.all {
 
 java {
   toolchain {
-    languageVersion.set(JavaLanguageVersion.of(8))
+    languageVersion.set(JavaLanguageVersion.of(17))
   }
 }