diff --git a/build.gradle.kts b/build.gradle.kts
index ecaf37c0..8029ec54 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,7 +1,7 @@
 //    permits to start the build setting the javac release parameter, no parameter means build for java8:
 // gradle clean build -PjavacRelease=8
 // gradle clean build -PjavacRelease=17
-val javacRelease = (project.findProperty("javacRelease") ?: "11") as String
+val javacRelease = (project.findProperty("javacRelease") ?: "17") as String
 
 plugins {
   id("fr.brouillard.oss.gradle.jgitver") version "0.9.1"