diff --git a/domain/build.gradle.kts b/domain/build.gradle.kts
index ee8c18ab..9ebc31fd 100644
--- a/domain/build.gradle.kts
+++ b/domain/build.gradle.kts
@@ -5,8 +5,8 @@ plugins {
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_21
-    targetCompatibility = JavaVersion.VERSION_21
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
 }
 
 tasks.withType<Test>().configureEach {