diff --git a/config.json b/config.json
index fcba620..5b243e8 100644
--- a/config.json
+++ b/config.json
@@ -4,7 +4,7 @@
   "version": "0.5.7",
   "dev_build_version": "0.5.8",
   "mc_version": "1.20.6",
-  "dev_build_mc_version": "1.21",
+  "dev_build_mc_version": "1.21.1",
   "baritone_mc_version": "1.21",
   "max_dev_builds": 10,
   "changelog": [