diff --git a/.github/workflows/nuget.yml b/.github/workflows/nuget.yml
index b00c21b..e921f11 100644
--- a/.github/workflows/nuget.yml
+++ b/.github/workflows/nuget.yml
@@ -4,6 +4,7 @@ on:
     branches:
       - master
       - Net6.0
+      - dev
 
 jobs:
   nuget-1:
diff --git a/BeatTogether.Core.ServerMessaging/Abstractions/ILayer2.cs b/BeatTogether.Core.ServerMessaging/Abstractions/ILayer2.cs
index 37ba779..ec0da5f 100644
--- a/BeatTogether.Core.ServerMessaging/Abstractions/ILayer2.cs
+++ b/BeatTogether.Core.ServerMessaging/Abstractions/ILayer2.cs
@@ -1,4 +1,5 @@
 using BeatTogether.Core.Enums;
+using BeatTogether.Core.Models;
 
 namespace BeatTogether.Core.Abstractions
 {
@@ -24,6 +25,7 @@ public interface ILayer2 //Layer 1 calls these to control layer 2
             GameplayServerControlSettings serverControlSettings,
             BeatmapDifficultyMask difficultyMask,
             GameplayModifiersMask modifiersMask,
-            string songPackMasks);
+            string songPackMasks,
+            VersionRange versionRange);
     }
 }
diff --git a/BeatTogether.Core.ServerMessaging/Abstractions/IServerInstance.cs b/BeatTogether.Core.ServerMessaging/Abstractions/IServerInstance.cs
index 3ec73aa..b537324 100644
--- a/BeatTogether.Core.ServerMessaging/Abstractions/IServerInstance.cs
+++ b/BeatTogether.Core.ServerMessaging/Abstractions/IServerInstance.cs
@@ -29,6 +29,7 @@ public interface IServerInstance
         public bool AllowChroma { get; set; }
         public bool AllowME { get; set; }
         public bool AllowNE { get; set; }
-    }
+        public VersionRange SupportedVersionRange { get; set; }
+	}
 
 }
diff --git a/BeatTogether.Core.ServerMessaging/BeatTogether.Core.csproj b/BeatTogether.Core.ServerMessaging/BeatTogether.Core.csproj
index 5603ede..7bfb8f1 100644
--- a/BeatTogether.Core.ServerMessaging/BeatTogether.Core.csproj
+++ b/BeatTogether.Core.ServerMessaging/BeatTogether.Core.csproj
@@ -4,7 +4,7 @@
     <TargetFramework>net6.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <Version>1.1.0</Version>
+    <Version>1.2.0</Version>
     <PackageIcon>icon.png</PackageIcon>
     <Authors>BeatTogether</Authors>
     <Company>BeatTogether</Company>
diff --git a/BeatTogether.Core.ServerMessaging/Extensions/BinaryBufferReaderExtensions.cs b/BeatTogether.Core.ServerMessaging/Extensions/BinaryBufferReaderExtensions.cs
index d42f8cf..d94c672 100644
--- a/BeatTogether.Core.ServerMessaging/Extensions/BinaryBufferReaderExtensions.cs
+++ b/BeatTogether.Core.ServerMessaging/Extensions/BinaryBufferReaderExtensions.cs
@@ -50,6 +50,9 @@ public static Server ReadServer(this ref BinaryBufferReader bufferReader)
             server.AllowME = bufferReader.ReadBool();
             server.AllowNE = bufferReader.ReadBool();
 
+            server.SupportedVersionRange.MinVersion = bufferReader.ReadUTF16String();
+            server.SupportedVersionRange.MaxVersion = bufferReader.ReadUTF16String();
+
             return server;
         }
     }
diff --git a/BeatTogether.Core.ServerMessaging/Extensions/BinaryBufferWriterExtensions.cs b/BeatTogether.Core.ServerMessaging/Extensions/BinaryBufferWriterExtensions.cs
index febefdb..3eb7999 100644
--- a/BeatTogether.Core.ServerMessaging/Extensions/BinaryBufferWriterExtensions.cs
+++ b/BeatTogether.Core.ServerMessaging/Extensions/BinaryBufferWriterExtensions.cs
@@ -48,6 +48,9 @@ public static void WriteServer(this ref BinaryBufferWriter bufferWriter, Server
             bufferWriter.WriteBool(server.AllowChroma);
             bufferWriter.WriteBool(server.AllowME);
             bufferWriter.WriteBool(server.AllowNE);
-        }
-    }
+
+            bufferWriter.WriteUTF16String(server.SupportedVersionRange.MinVersion);
+            bufferWriter.WriteUTF16String(server.SupportedVersionRange.MaxVersion);
+		}
+	}
 }
diff --git a/BeatTogether.Core.ServerMessaging/Models/VersionRange.cs b/BeatTogether.Core.ServerMessaging/Models/VersionRange.cs
new file mode 100644
index 0000000..384e42b
--- /dev/null
+++ b/BeatTogether.Core.ServerMessaging/Models/VersionRange.cs
@@ -0,0 +1,54 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BeatTogether.Core.Models
+{
+	public class VersionRange
+	{
+		public string MinVersion { get; set; } = "0.0.0";
+		public string MaxVersion { get; set; } = new Version(int.MaxValue, int.MaxValue, int.MaxValue, int.MaxValue).ToString();
+
+		public static VersionRange? FindVersionRange(List<VersionRange> versionRanges, Version version)
+		{
+			foreach (var range in versionRanges)
+				if (VersionRangeSatisfies(range, version))
+					return range;
+			return null;
+		}
+
+		public static VersionRange? FindVersionRange(List<VersionRange> versionRanges, string version)
+		{
+			return FindVersionRange(versionRanges, version);
+		}
+		public static bool VersionRangeSatisfies(VersionRange range, Version version)
+		{
+			var minVersion = Version.Parse(range.MinVersion);
+			var maxVersion = Version.Parse(range.MaxVersion);
+			return version >= minVersion && version <= maxVersion;
+		}
+
+		public static bool VersionRangeSatisfies(VersionRange range, string version)
+		{
+			return VersionRangeSatisfies(range, Version.Parse(version));
+		}
+
+		public static VersionStatus CheckVersionRange(VersionRange range, Version version)
+		{
+			var minVersion = Version.Parse(range.MinVersion);
+			var maxVersion = Version.Parse(range.MaxVersion);
+			if (version < minVersion) return VersionStatus.TooLow;
+			if (version > maxVersion) return VersionStatus.TooHigh;
+			return VersionStatus.Ok;
+		}
+
+		public enum VersionStatus
+		{
+			Ok,
+			TooHigh,
+			TooLow
+		}
+	}
+}
diff --git a/BeatTogether.Core.ServerMessaging/ServerMessaging/ServerAutobusMessage.cs b/BeatTogether.Core.ServerMessaging/ServerMessaging/ServerAutobusMessage.cs
index 17e7206..4582690 100644
--- a/BeatTogether.Core.ServerMessaging/ServerMessaging/ServerAutobusMessage.cs
+++ b/BeatTogether.Core.ServerMessaging/ServerMessaging/ServerAutobusMessage.cs
@@ -32,8 +32,10 @@ public Server(IServerInstance instance)
             AllowChroma = instance.AllowChroma;
             AllowME = instance.AllowME;
             AllowNE = instance.AllowNE;
-        }
-        public Server() { }
+
+            SupportedVersionRange = instance.SupportedVersionRange;
+		}
+		public Server() { }
 
         public string ServerName { get; set; } = string.Empty;
         public string Secret { get; set; } = string.Empty;
@@ -58,5 +60,6 @@ public Server() { }
         public bool AllowChroma { get; set; }
         public bool AllowME { get ; set ; }
         public bool AllowNE { get; set; }
-    }
+        public VersionRange SupportedVersionRange { get; set; } = new();
+	}
 }