diff --git a/CryptoExchange.Net/CryptoExchange.Net.csproj b/CryptoExchange.Net/CryptoExchange.Net.csproj
index 5be7dc8..803cfa5 100644
--- a/CryptoExchange.Net/CryptoExchange.Net.csproj
+++ b/CryptoExchange.Net/CryptoExchange.Net.csproj
@@ -6,16 +6,16 @@
     <PackageId>CryptoExchange.Net</PackageId>
     <Authors>JKorf</Authors>
     <Description>A base package for implementing cryptocurrency exchange API's</Description>
-    <PackageVersion>5.0.0-beta6</PackageVersion>
+    <PackageVersion>5.0.0-beta7</PackageVersion>
     <AssemblyVersion>5.0.0</AssemblyVersion>
-    <FileVersion>5.0.0-beta6</FileVersion>
+    <FileVersion>5.0.0-beta7</FileVersion>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
     <RepositoryType>git</RepositoryType>
     <RepositoryUrl>https://github.com/JKorf/CryptoExchange.Net.git</RepositoryUrl>
     <PackageProjectUrl>https://github.com/JKorf/CryptoExchange.Net</PackageProjectUrl>
     <NeutralLanguage>en</NeutralLanguage>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-    <PackageReleaseNotes>5.0.0-beta6 - Fix for deserialization of DateTime string "0" to a non-nullable DateTime property in .net framework</PackageReleaseNotes>
+    <PackageReleaseNotes>5.0.0-beta7 - Added CancellationToken support on Common client interfaces, Added CancellationToken support on SymbolOrderBook, Improved SymbolOrderBook Start/Stop robustness</PackageReleaseNotes>
     <Nullable>enable</Nullable>
     <LangVersion>9.0</LangVersion>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
diff --git a/CryptoExchange.Net/OrderBook/SymbolOrderBook.cs b/CryptoExchange.Net/OrderBook/SymbolOrderBook.cs
index 75a0de2..a4c95fc 100644
--- a/CryptoExchange.Net/OrderBook/SymbolOrderBook.cs
+++ b/CryptoExchange.Net/OrderBook/SymbolOrderBook.cs
@@ -26,7 +26,7 @@ namespace CryptoExchange.Net.OrderBook
         
         private bool _stopProcessing;
         private Task? _processTask;
-        private CancellationTokenSource _cts;
+        private CancellationTokenSource? _cts;
 
         private readonly AsyncResetEvent _queueEvent;
         private readonly ConcurrentQueue<object> _processQueue;
@@ -281,7 +281,7 @@ namespace CryptoExchange.Net.OrderBook
         {
             log.Write(LogLevel.Debug, $"{Id} order book {Symbol} stopping");
             Status = OrderBookStatus.Disconnected;
-            _cts.Cancel();
+            _cts?.Cancel();
             _queueEvent.Set();
             if (_processTask != null)
                 await _processTask.ConfigureAwait(false);
@@ -564,7 +564,7 @@ namespace CryptoExchange.Net.OrderBook
                 if (Status != OrderBookStatus.Syncing)
                     return;
 
-                var resyncResult = await DoResyncAsync(_cts.Token).ConfigureAwait(false);
+                var resyncResult = await DoResyncAsync(_cts!.Token).ConfigureAwait(false);
                 success = resyncResult;
             }
 
diff --git a/README.md b/README.md
index 37d2e1b..c4c3494 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,11 @@ I develop and maintain this package on my own for free in my spare time. Donatio
 Alternatively, sponsor me on Github using [Github Sponsors](https://github.com/sponsors/JKorf)  
 
 ## Release notes
+* Version 5.0.0-beta7 - 05 Feb 2022
+    * Added CancellationToken support on Common client interfaces
+    * Added CancellationToken support on SymbolOrderBook
+    * Improved SymbolOrderBook Start/Stop robustness
+
 * Version 5.0.0-beta6 - 02 Feb 2022
     * Fix for deserialization of DateTime string "0" to a non-nullable DateTime property in .net framework