diff --git a/data/pc/common/protocolVersions.json b/data/pc/common/protocolVersions.json
index 4158ee733..70ffa0fd6 100644
--- a/data/pc/common/protocolVersions.json
+++ b/data/pc/common/protocolVersions.json
@@ -1,4 +1,12 @@
 [
+  {
+    "minecraftVersion": "1.20.4-rc1",
+    "version": 1073741993,
+    "dataVersion": 3699,
+    "usesNetty": true,
+    "majorVersion": "1.20",
+    "releaseType": "snapshot"
+  },
   {
     "minecraftVersion": "1.20.3",
     "version": 765,