diff --git a/build.gradle b/build.gradle
index 9191e4d..6543ac3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -33,8 +33,8 @@ group project.ext.groupId
 version = project.ext.version
 
 mainClassName = "com.goterl.lazysodium.LazySodium"
-sourceCompatibility = JavaVersion.VERSION_21
-targetCompatibility = JavaVersion.VERSION_21
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
 
 sourceSets {
     main {
@@ -258,4 +258,4 @@ tasks.withType(Test) {
             }
         }
     }
-}
\ No newline at end of file
+}