diff --git a/src/main/java/us/myles/ViaVersion/api/protocol/ProtocolVersion.java b/src/main/java/us/myles/ViaVersion/api/protocol/ProtocolVersion.java
index ab33bf5ff..48a95fe05 100644
--- a/src/main/java/us/myles/ViaVersion/api/protocol/ProtocolVersion.java
+++ b/src/main/java/us/myles/ViaVersion/api/protocol/ProtocolVersion.java
@@ -2,11 +2,11 @@ package us.myles.ViaVersion.api.protocol;
 
 public class ProtocolVersion {
     /* Defined protocol constants */
-    public static int V1_7_1 = 4;
-    public static int V1_7_6 = 5;
+    public static final int V1_7_1 = 4;
+    public static final int V1_7_6 = 5;
 
-    public static int V1_8 = 47;
+    public static final int V1_8 = 47;
 
-    public static int V1_9 = 107;
-    public static int V1_9_1_PRE2 = 108;
+    public static final int V1_9 = 107;
+    public static final int V1_9_1_PRE2 = 108;
 }