diff --git a/gradle.properties b/gradle.properties
index bd9c87d..e995719 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,9 +2,9 @@ mod_version = 1.5.2
 group = net.shadowfacts
 archivesBaseName = Forgelin
 
-mc_version = 1.12.2
-mcp_mappings = snapshot_20171003
-forge_version = 14.23.0.2517
+mc_version = 1.12
+mcp_mappings = snapshot_20170629
+forge_version = 14.21.1.2387
 
 kotlin_version = 1.1.51
 annotations_version = 15.0