diff --git a/build.gradle b/build.gradle
index 3ef6ffc7..69d46e92 100644
--- a/build.gradle
+++ b/build.gradle
@@ -103,6 +103,9 @@ dependencies {
 
 jar.exclude("**.bat")
 
+sourceCompatibility = "1.8"
+targetCompatibility = "1.8"
+
 compileJava {
     sourceCompatibility = "1.8"
     targetCompatibility = "1.8"