diff --git a/src/IO.Ably.Tests.Shared/Realtime/ConnectionSpecs/ConnectionSpecs.cs b/src/IO.Ably.Tests.Shared/Realtime/ConnectionSpecs/ConnectionSpecs.cs
index ebfd6c110..9e4937037 100644
--- a/src/IO.Ably.Tests.Shared/Realtime/ConnectionSpecs/ConnectionSpecs.cs
+++ b/src/IO.Ably.Tests.Shared/Realtime/ConnectionSpecs/ConnectionSpecs.cs
@@ -25,6 +25,7 @@ public async Task RecoveryKey_MsgSerialShouldNotBeSentToAblyButShouldBeSetOnConn
             paramsDict.ContainsKey("recover").Should().BeTrue();
             paramsDict["recover"].Should().Be("uniqueKey");
             paramsDict.ContainsKey("msg_serial").Should().BeFalse();
+            await Task.Delay(2000);
             client.Connection.MessageSerial.Should().Be(45);
         }