diff --git a/CryptoExchange.Net/CryptoExchange.Net.csproj b/CryptoExchange.Net/CryptoExchange.Net.csproj
index aeb0426..08bb5a0 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>3.8.0</PackageVersion>
+    <PackageVersion>3.8.1</PackageVersion>
     <AssemblyVersion>3.8.0</AssemblyVersion>
-    <FileVersion>3.8.0</FileVersion>
+    <FileVersion>3.8.1</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>3.8.0 - Better handling of json errors while deserializing stream, Added string datetime converter</PackageReleaseNotes>
+    <PackageReleaseNotes>3.8.1 - Added ValidateNullOrNotEmpty method extension</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 2717450..81581de 100644
--- a/CryptoExchange.Net/CryptoExchange.Net.xml
+++ b/CryptoExchange.Net/CryptoExchange.Net.xml
@@ -930,6 +930,13 @@
             <param name="value">The value of the string</param>
             <param name="argumentName">Name of the parameter</param>
         </member>
+        <member name="M:CryptoExchange.Net.ExtensionMethods.ValidateNullOrNotEmpty(System.String,System.String)">
+            <summary>
+            Validates a string is null or not empty
+            </summary>
+            <param name="value"></param>
+            <param name="argumentName"></param>
+        </member>
         <member name="M:CryptoExchange.Net.ExtensionMethods.ValidateNotNull(System.Object,System.String)">
             <summary>
             Validates an object is not null
@@ -3512,9 +3519,7 @@
         <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>
-    </members>
-</doc>
-System.Diagnostics.CodeAnalysis.AllowNullAttribute">
+        <member name="T: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/CryptoExchange.Net/ExtensionMethods.cs b/CryptoExchange.Net/ExtensionMethods.cs
index 3f1df21..92dfe73 100644
--- a/CryptoExchange.Net/ExtensionMethods.cs
+++ b/CryptoExchange.Net/ExtensionMethods.cs
@@ -253,6 +253,17 @@ namespace CryptoExchange.Net
                 throw new ArgumentException($"No value provided for parameter {argumentName}", argumentName);
         }
 
+        /// <summary>
+        /// Validates a string is null or not empty
+        /// </summary>
+        /// <param name="value"></param>
+        /// <param name="argumentName"></param>
+        public static void ValidateNullOrNotEmpty(this string value, string argumentName)
+        {
+            if (value != null && string.IsNullOrEmpty(value))
+                throw new ArgumentException($"No value provided for parameter {argumentName}", argumentName);
+        }
+
         /// <summary>
         /// Validates an object is not null
         /// </summary>