diff --git a/src/Tgstation.Server.Host/Components/Session/SessionController.cs b/src/Tgstation.Server.Host/Components/Session/SessionController.cs
index df2971588d..b6cfa31e50 100644
--- a/src/Tgstation.Server.Host/Components/Session/SessionController.cs
+++ b/src/Tgstation.Server.Host/Components/Session/SessionController.cs
@@ -661,7 +661,8 @@ namespace Tgstation.Server.Host.Components.Session
 						return BridgeError("Missing dmApiVersion field!");
 
 					DMApiVersion = parameters.Version;
-					if (DMApiVersion.Major != DMApiConstants.InteropVersion.Major)
+					if (DMApiVersion.Major != DMApiConstants.InteropVersion.Major
+						|| (ByondVersion.Engine.Value == EngineType.OpenDream && DMApiVersion < new Version(5, 7))) // TODO: When OD figures out how to unite port and topic_port, set an upper version bound on OD for this check
 					{
 						apiValidationStatus = ApiValidationStatus.Incompatible;
 						return BridgeError("Incompatible dmApiVersion!");