diff --git a/install.py b/install.py
index aaa21104..92b5e472 100644
--- a/install.py
+++ b/install.py
@@ -12,7 +12,7 @@
 base_dir = os.path.dirname(os.path.abspath(__file__))
 
 mc_version = "1.7.10"
-of_version = mc_version+"_HD_U_A2"
+of_version = mc_version+"_HD_U_A4"
 of_file_extension = ".jar"
 mcp_version = "mcp908"