diff --git a/build.gradle b/build.gradle
index 87b0edd59f..f0a4430bb5 100644
--- a/build.gradle
+++ b/build.gradle
@@ -189,7 +189,7 @@ project(':forge') {
         // Essentially, the same as the old, except dropping the first number, and the builds are no longer unique.
         MCP_ARTIFACT = project(':mcp').mcp.config
         SPECIAL_SOURCE = 'net.md-5:SpecialSource:1.9.0'
-        SPECIAL_SOURCE_MCP = 'net.md-5:SpecialSource:1.8.3'
+        SPECIAL_SOURCE_MCP = 'net.md-5:SpecialSource:1.8.5'
         VERSION_JSON = project(':mcp').file('build/mcp/downloadJson/version.json')
         BINPATCH_TOOL = 'net.minecraftforge:binarypatcher:1.0.12:fatjar'
         INSTALLER_TOOLS = 'net.minecraftforge:installertools:1.1.11'