diff --git a/forge/build.gradle b/forge/build.gradle
index 374a5ba..441197c 100644
--- a/forge/build.gradle
+++ b/forge/build.gradle
@@ -19,6 +19,10 @@ legacyForge {
     if (at.exists()) {
         accessTransformers = ["src/main/resources/META-INF/accesstransformer.cfg"]
     }
+    parchment {
+        minecraftVersion = parchment_minecraft
+        mappingsVersion = parchment_version
+    }
     runs {
         client {
             client()