diff --git a/README.md b/README.md
index d663734..028d41c 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,8 @@ See more documentation at [project's wiki](https://github.com/xfox111/SimpleOTP/
 ```csharp
 string sample_config_uri = "otpauth://totp/FoxDev%20Studio:eugene@xfox111.net?secret=ESQVTYRM2CWZC3NX24GRRWIAUUWVHWQH&issuer=FoxDev%20Studio";
 OTPConfiguration config = OTPConfiguration.GetConfiguration(sample_config_uri);
-// OTPModel { Id = af2358b0-3f69-4dd7-9537-32c07d6663aa, Type = TOTP, IssuerLabel = FoxDev Studio, AccountName = eugene@xfox111.net, Secret = ESQVTYRM2CWZC3NX24GRRWIAUUWVHWQH, Issuer = FoxDev Studio, Algorithm = SHA1, Digits = 6, Counter = 0, Period = 00:00:30 }
+// OTPConfiguration { Id = af2358b0-3f69-4dd7-9537-32c07d6663aa, Type = TOTP, IssuerLabel = FoxDev Studio, AccountName = eugene@xfox111.net, Secret = ESQVTYRM2CWZC3NX24GRRWIAUUWVHWQH, Issuer = FoxDev Studio, Algorithm = SHA1, Digits = 6, Counter = 0, Period = 00:00:30 }
+
 
 OTPCode code = OTPService.GenerateCode(ref config);
 // OTPasswordModel { Code = 350386, Expiring = 23-May-21 06:08:30 PM }
@@ -53,7 +54,7 @@ string qrCode = config.GetQrImage(300); // data:image/png;base64,...
 OTPFactory factory = new (config);
 
 factory.CodeUpdated += (newCode) => Console.WriteLine(newCode);
-// OTPasswordModel { Code = 350386, Expiring = 23-May-21 06:08:30 PM }
+// OTPCode { Code = 350386, Expiring = 23-May-21 06:08:30 PM }
 factory.PropertyChanged += (sender, args) =>
 {
 	if (args.PropertyName == nameof(factory.TimeLeft))
diff --git a/SimpleOTP/Models/OTPCode.cs b/SimpleOTP/Models/OTPCode.cs
index 9900f3f..dbf0ed6 100644
--- a/SimpleOTP/Models/OTPCode.cs
+++ b/SimpleOTP/Models/OTPCode.cs
@@ -33,7 +33,7 @@ namespace SimpleOTP.Models
 
 		/// <summary>
 		/// Initializes a new instance of the <see cref="OTPCode"/> class.<br/>
-		/// Use this contructor only for HOTP key. Otherwise, fill out all properties.
+		/// Use this constructor only for HOTP key. Otherwise, fill out all properties.
 		/// </summary>
 		/// <param name="code">OTP code.</param>
 		public OTPCode(int code) =>
@@ -48,4 +48,4 @@ namespace SimpleOTP.Models
 		public string GetCode(string formatter = "000000") =>
 			Code.ToString(formatter);
 	}
-}
\ No newline at end of file
+}
diff --git a/SimpleOTP/Models/OTPConfiguration.cs b/SimpleOTP/Models/OTPConfiguration.cs
index 6fdff7c..d8214ff 100644
--- a/SimpleOTP/Models/OTPConfiguration.cs
+++ b/SimpleOTP/Models/OTPConfiguration.cs
@@ -26,7 +26,7 @@ namespace SimpleOTP.Models
 		public Guid Id { get; set; } = Guid.NewGuid();
 
 		/// <summary>
-		/// Gets or sets oTP algorithm type.
+		/// Gets or sets OTP algorithm type.
 		/// </summary>
 		public OTPType Type { get; set; } = OTPType.TOTP;
 
@@ -217,7 +217,7 @@ namespace SimpleOTP.Models
 			HttpResponseMessage response = client.GetAsync($"https://chart.googleapis.com/chart?cht=qr&chs={qrCodeSize}x{qrCodeSize}&chl={HttpUtility.UrlEncode(GetUri().AbsoluteUri)}").Result;
 
 			if (!response.IsSuccessStatusCode)
-				throw new HttpRequestException("Response status code indicates that request has failed", null, response.StatusCode);
+				throw new HttpRequestException($"Response status code indicates that request has failed (Response code: {response.StatusCode})");
 
 			byte[] imageBytes = await response.Content.ReadAsByteArrayAsync();
 			string imageString = @$"data:image/png;base64,{Convert.ToBase64String(imageBytes)}";
@@ -225,4 +225,4 @@ namespace SimpleOTP.Models
 			return imageString;
 		}
 	}
-}
\ No newline at end of file
+}
diff --git a/SimpleOTP/SimpleOTP.csproj b/SimpleOTP/SimpleOTP.csproj
index af2e7a1..ea53c4d 100644
--- a/SimpleOTP/SimpleOTP.csproj
+++ b/SimpleOTP/SimpleOTP.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
 	<PropertyGroup>
-		<TargetFramework>net5.0</TargetFramework>
+		<TargetFrameworks>net5.0;netstandard2.1;netcoreapp3.1</TargetFrameworks>
+		<LangVersion>9</LangVersion>
 		<GenerateDocumentationFile>true</GenerateDocumentationFile>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
@@ -11,7 +12,7 @@
 	<PropertyGroup>
 		<PackageId>SimpleOTP</PackageId>
 		<AssemblyName>SimpleOTP</AssemblyName>
-		<Version>1.1.0</Version>
+		<Version>1.2.0</Version>
 		<Description>.NET library for TOTP/HOTP implementation on server (ASP.NET) or client (Xamarin) side</Description>
 		<Authors>Eugene Fox</Authors>
 		<Company>FoxDev Studio</Company>
@@ -21,7 +22,8 @@
 		<RepositoryUrl>https://github.com/XFox111/SimpleOTP</RepositoryUrl>
 		<NeutralLanguage>en-US</NeutralLanguage>
 		<PackageTags>otp;totp;dotnet;hotp;authenticator;2fa;mfa;security;oath</PackageTags>
-		<PackageReleaseNotes>- Updated OTP validation methods signatures: `ValidateCode()` is now deprecated and will be removed in future releases</PackageReleaseNotes>
+		<PackageReleaseNotes>- Expanded support to .NET Standard 2.1 and .NET Core 3.1
+- Fixed some documentation typos (https://github.com/XFox111/SimpleOTP/issues/14)</PackageReleaseNotes>
 	</PropertyGroup>
 
 	<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">