diff --git a/src/main/java/de/bixilon/minosoft/protocol/protocol/ProtocolVersions.kt b/src/main/java/de/bixilon/minosoft/protocol/protocol/ProtocolVersions.kt
index f0d55fe17..cc1990357 100644
--- a/src/main/java/de/bixilon/minosoft/protocol/protocol/ProtocolVersions.kt
+++ b/src/main/java/de/bixilon/minosoft/protocol/protocol/ProtocolVersions.kt
@@ -14,6 +14,7 @@ package de.bixilon.minosoft.protocol.protocol
 
 @Suppress("UNUSED")
 object ProtocolVersions {
+    const val V_1_20_PRE4 = 897
     const val V_1_20_PRE3 = 896
     const val V_1_20_PRE2 = 895
     const val V_1_20_PRE1 = 894
diff --git a/src/main/java/de/bixilon/minosoft/protocol/protocol/VersionSupport.kt b/src/main/java/de/bixilon/minosoft/protocol/protocol/VersionSupport.kt
index df1890694..6b87ff47d 100644
--- a/src/main/java/de/bixilon/minosoft/protocol/protocol/VersionSupport.kt
+++ b/src/main/java/de/bixilon/minosoft/protocol/protocol/VersionSupport.kt
@@ -15,10 +15,10 @@ package de.bixilon.minosoft.protocol.protocol
 
 import de.bixilon.minosoft.protocol.protocol.ProtocolVersions.V_13W41B
 import de.bixilon.minosoft.protocol.protocol.ProtocolVersions.V_1_19_4
-import de.bixilon.minosoft.protocol.protocol.ProtocolVersions.V_1_20_PRE3
+import de.bixilon.minosoft.protocol.protocol.ProtocolVersions.V_1_20_PRE4
 
 object VersionSupport {
     const val MINIMUM_VERSION = V_13W41B
-    const val LATEST_VERSION = V_1_20_PRE3
+    const val LATEST_VERSION = V_1_20_PRE4
     const val LATEST_RELEASE = V_1_19_4
 }
diff --git a/src/main/resources/assets/minosoft/mapping/versions.json b/src/main/resources/assets/minosoft/mapping/versions.json
index c251f53e0..dcb7268f5 100644
--- a/src/main/resources/assets/minosoft/mapping/versions.json
+++ b/src/main/resources/assets/minosoft/mapping/versions.json
@@ -1,4 +1,9 @@
 {
+  "897": {
+    "name": "1.20-pre4",
+    "protocol_id": 1073741961,
+    "packets": 880
+  },
   "896": {
     "name": "1.20-pre3",
     "protocol_id": 1073741960,