diff --git a/build.gradle b/build.gradle
index 1a51b862..33b3e7bd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -21,6 +21,9 @@ version = "1.3.7-dev"
 group = "cr0s.warpdrive" // http://maven.apache.org/guides/mini/guide-naming-conventions.html
 archivesBaseName = "WarpDrive"
 
+sourceCompatibility = JavaVersion.VERSION_1_7
+targetCompatibility = JavaVersion.VERSION_1_7
+
 minecraft {
     version = "1.7.10-10.13.4.1492-1.7.10"
     runDir = "eclipse"