diff --git a/build.gradle b/build.gradle
index df206de6..f456006b 100755
--- a/build.gradle
+++ b/build.gradle
@@ -19,6 +19,9 @@ buildscript {
 
 apply plugin: 'forge'
 
+sourceCompatibility = 1.7
+targetCompatibility = 1.7
+
 version = "1.0.5"
 group= "eu.crushedpixel.replaymod"
 archivesBaseName = "replaymod"