diff --git a/build.properties b/build.properties
index 2adb97955..3422e32a5 100644
--- a/build.properties
+++ b/build.properties
@@ -2,7 +2,7 @@ minecraft.version=1.7.10
 forge.version=10.13.2.1291
 
 oc.version=1.5.9
-oc.subversion=
+oc.subversion=rc.1
 
 ae2.version=rv2-beta-26
 bc.version=6.4.9