diff --git a/CryptoExchange.Net/CryptoExchange.Net.csproj b/CryptoExchange.Net/CryptoExchange.Net.csproj
index cf788b3..e4206da 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>4.1.0</PackageVersion>
-    <AssemblyVersion>4.1.0</AssemblyVersion>
-    <FileVersion>4.1.0</FileVersion>
+    <PackageVersion>4.2.0</PackageVersion>
+    <AssemblyVersion>4.2.0</AssemblyVersion>
+    <FileVersion>4.2.0</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>4.1.0 - Added overload for UnsubscribeAsync with id parameter, Added parameter position configuration per HttpMethod type, Added option to send custom headers with each requets, Added option to send custom headers with individual requests, Added debug data on error</PackageReleaseNotes>
+    <PackageReleaseNotes>4.2.0 - Prevent reconnect spamming when invalid checksum is calculated in SymbolOrderBook, Added default nonce provider implementation</PackageReleaseNotes>
     <Nullable>enable</Nullable>
     <LangVersion>8.0</LangVersion>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
diff --git a/CryptoExchange.Net/CryptoExchange.Net.xml b/CryptoExchange.Net/CryptoExchange.Net.xml
index babdda6..688fe3c 100644
--- a/CryptoExchange.Net/CryptoExchange.Net.xml
+++ b/CryptoExchange.Net/CryptoExchange.Net.xml
@@ -3976,7 +3976,9 @@
         <member name="M:CryptoExchange.Net.Sockets.WebsocketFactory.CreateWebsocket(CryptoExchange.Net.Logging.Log,System.String,System.Collections.Generic.IDictionary{System.String,System.String},System.Collections.Generic.IDictionary{System.String,System.String})">
             <inheritdoc />
         </member>
-        <member name="T:System.Diagnostics.CodeAnalysis.AllowNullAttribute">
+    </members>
+</doc>
+System.Diagnostics.CodeAnalysis.AllowNullAttribute">
             <summary>
                 Specifies that <see langword="null"/> is allowed as an input even if the
                 corresponding type disallows it.
diff --git a/README.md b/README.md
index 4ec1798..1cc7348 100644
--- a/README.md
+++ b/README.md
@@ -324,6 +324,10 @@ private void SomeMethod()
 ````
 
 ## Release notes
+* Version 4.2.0 - 20 Sep 2021
+    * Prevent reconnect spamming when invalid checksum is calculated in SymbolOrderBook
+    * Added default nonce provider implementation
+
 * Version 4.1.0 - 15 Sep 2021
     * Added overload for UnsubscribeAsync with id parameter
     * Added parameter position configuration per HttpMethod type