diff --git a/CryptoExchange.Net/CryptoExchange.Net.csproj b/CryptoExchange.Net/CryptoExchange.Net.csproj
index 50af7c6..ac3304b 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>3.8.1</PackageVersion>
-    <AssemblyVersion>3.8.0</AssemblyVersion>
-    <FileVersion>3.8.1</FileVersion>
+    <PackageVersion>3.9.0</PackageVersion>
+    <AssemblyVersion>3.9.0</AssemblyVersion>
+    <FileVersion>3.9.0</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>3.8.1 - Added additional debug messages, Added ValidateNullOrNotEmpty method extension</PackageReleaseNotes>
+    <PackageReleaseNotes>3.9.0 - Added optional JsonSerializer parameter to SendRequest to use during deserialization, Fix for unhandled message warning when unsubscribing a socket subscription</PackageReleaseNotes>
     <Nullable>enable</Nullable>
     <LangVersion>8.0</LangVersion>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
diff --git a/README.md b/README.md
index 648ba6a..c4b5637 100644
--- a/README.md
+++ b/README.md
@@ -290,6 +290,10 @@ static async Task GetExchangeData(IExchangeClient client)
 ````
 
 ## Release notes
+* Version 3.9.0 - 28 apr 2021
+    * Added optional JsonSerializer parameter to SendRequest to use during deserialization
+    * Fix for unhandled message warning when unsubscribing a socket subscription
+
 * Version 3.8.1 - 19 apr 2021
     * Added debug logs
 	* Added ValidateNullOrNotEmpty extension method