diff --git a/build.properties b/build.properties
index 29ab96fba..9f884109b 100644
--- a/build.properties
+++ b/build.properties
@@ -1,7 +1,7 @@
 minecraft.version=1.7.10
 forge.version=10.13.4.1614-1.7.10
 
-oc.version=1.7.5.12-GTNH
+oc.version=1.7.5.13-GTNH
 
 ae2.version=rv3-beta-31
 bc.version=7.0.9