diff --git a/build.gradle b/build.gradle
index 42ebec6..4e49791 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,6 +3,12 @@ plugins {
     id "org.sonarqube" version "7.3.1.8318"
 }
 
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(25)
+    }
+}
+
 sonar {
   properties {
     property "sonar.projectKey", "deprecated-java-api-demo-4"