diff --git a/build.gradle b/build.gradle
index 75262f93ac83f49a0fd8fb2bd49fe2a06aaffcf1..4e65487b87fee7f912e6da9e28e70c6d536afe49 100644
--- a/build.gradle
+++ b/build.gradle
@@ -41,7 +41,11 @@ allprojects {
 project(":desktop") {
     apply plugin: "java-library"
 
-
+	java {
+		sourceCompatibility = JavaVersion.VERSION_1_8
+		targetCompatibility = JavaVersion.VERSION_1_8
+	}
+	
     dependencies {
         implementation project(":core")
         api "com.badlogicgames.gdx:gdx-backend-lwjgl:$gdxVersion"
@@ -65,7 +69,11 @@ project(":desktop") {
 
 project(":core") {
     apply plugin: "java-library"
-
+	
+	java {
+		sourceCompatibility = JavaVersion.VERSION_1_8
+		targetCompatibility = JavaVersion.VERSION_1_8
+	}
 
     dependencies {
         api "com.badlogicgames.gdx:gdx:$gdxVersion"