diff --git a/build.gradle.kts b/build.gradle.kts
index 2e5a948..bdf99b2 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -18,7 +18,7 @@ version = file("VERSION").readText().trim()
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(21)
+        languageVersion = JavaLanguageVersion.of(25)
     }
 }