diff --git a/ExternalConnectors/ExternalConnectors.csproj b/ExternalConnectors/ExternalConnectors.csproj
index 082b95bd..99602f9b 100644
--- a/ExternalConnectors/ExternalConnectors.csproj
+++ b/ExternalConnectors/ExternalConnectors.csproj
@@ -11,8 +11,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="AWSSDK.Core" Version="3.7.105.17" />
-    <PackageReference Include="AWSSDK.EC2" Version="3.7.126.2" />
+    <PackageReference Include="AWSSDK.Core" Version="3.7.105.21" />
+    <PackageReference Include="AWSSDK.EC2" Version="3.7.127.2" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="Portable.BouncyCastle" Version="1.9.0" />
   </ItemGroup>
diff --git a/ExternalConnectors/PuttyKeyFileGenerator.cs b/ExternalConnectors/PuttyKeyFileGenerator.cs
index a70e1bdd..de728def 100644
--- a/ExternalConnectors/PuttyKeyFileGenerator.cs
+++ b/ExternalConnectors/PuttyKeyFileGenerator.cs
@@ -19,8 +19,7 @@ public class PuttyKeyFileGenerator
     public static string ToPuttyPrivateKey(RSACryptoServiceProvider cryptoServiceProvider, string Comment = "imported-openssh-key")
     {
         var publicParameters = cryptoServiceProvider.ExportParameters(false);
-        byte[] publicBuffer = new byte[3 + keyType.Length + GetPrefixSize(publicParameters.Exponent) + publicParameters.Exponent.Length +
-                GetPrefixSize(publicParameters.Modulus) + publicParameters.Modulus.Length + 1];
+        byte[] publicBuffer = new byte[3 + keyType.Length + GetPrefixSize(publicParameters.Exponent) + publicParameters.Exponent.Length + GetPrefixSize(publicParameters.Modulus) + publicParameters.Modulus.Length + 1];
 
         using (var bw = new BinaryWriter(new MemoryStream(publicBuffer)))
         {
@@ -32,7 +31,8 @@ public class PuttyKeyFileGenerator
         var publicBlob = System.Convert.ToBase64String(publicBuffer);
 
         var privateParameters = cryptoServiceProvider.ExportParameters(true);
-        byte[] privateBuffer = new byte[paddedPrefixSize + privateParameters.D.Length + paddedPrefixSize + privateParameters.P.Length + paddedPrefixSize + privateParameters.Q.Length + paddedPrefixSize + privateParameters.InverseQ.Length];
+
+        byte[] privateBuffer = new byte[paddedPrefixSize + privateParameters.D.Length + paddedPrefixSize + privateParameters.P!.Length + paddedPrefixSize + privateParameters.Q.Length + paddedPrefixSize + privateParameters.InverseQ.Length];
 
         using (var bw = new BinaryWriter(new MemoryStream(privateBuffer)))
         {
@@ -43,10 +43,9 @@ public class PuttyKeyFileGenerator
         }
         var privateBlob = System.Convert.ToBase64String(privateBuffer);
 
-        HMACSHA1 hmacSha1 = new HMACSHA1(SHA1.Create().ComputeHash(Encoding.ASCII.GetBytes("putty-private-key-file-mac-key")));
+        HMACSHA1 hmacSha1 = new(SHA1.Create().ComputeHash(Encoding.ASCII.GetBytes("putty-private-key-file-mac-key")));
         //byte[] bytesToHash = new byte[4 + 7 + 4 + 4 + 4 + Comment.Length + 4 + publicBuffer.Length + 4 + privateBuffer.Length];
-        byte[] bytesToHash = new byte[prefixSize + keyType.Length + prefixSize + encryptionType.Length + prefixSize + Comment.Length +
-                                      prefixSize + publicBuffer.Length + prefixSize + privateBuffer.Length];
+        byte[] bytesToHash = new byte[prefixSize + keyType.Length + prefixSize + encryptionType.Length + prefixSize + Comment.Length + prefixSize + publicBuffer.Length + prefixSize + privateBuffer.Length];
 
         using (var bw = new BinaryWriter(new MemoryStream(bytesToHash)))
         {
diff --git a/mRemoteNG/Properties/AssemblyInfo.cs b/mRemoteNG/Properties/AssemblyInfo.cs
index b770615d..8a60e2d5 100644
--- a/mRemoteNG/Properties/AssemblyInfo.cs
+++ b/mRemoteNG/Properties/AssemblyInfo.cs
@@ -15,8 +15,8 @@ using System.Resources;
 [assembly: AssemblyCulture("")]
 
 // Version information
-[assembly: AssemblyVersion("1.77.3.1826")]
-[assembly: AssemblyFileVersion("1.77.3.1826")]
+[assembly: AssemblyVersion("1.77.3.1828")]
+[assembly: AssemblyFileVersion("1.77.3.1828")]
 [assembly: NeutralResourcesLanguageAttribute("en-US")]
-[assembly: AssemblyInformationalVersion("1.77.3 (Nightly Build 1826)")]
+[assembly: AssemblyInformationalVersion("1.77.3 (Nightly Build 1828)")]
 
diff --git a/mRemoteNG/Themes/ThemeInfo.cs b/mRemoteNG/Themes/ThemeInfo.cs
index eb0f2445..41e55aad 100644
--- a/mRemoteNG/Themes/ThemeInfo.cs
+++ b/mRemoteNG/Themes/ThemeInfo.cs
@@ -1,11 +1,13 @@
-using System;
+using System;
 using System.ComponentModel;
 using System.Linq;
+using System.Runtime.Versioning;
 using WeifenLuo.WinFormsUI.Docking;
 
 
 namespace mRemoteNG.Themes
 {
+    [SupportedOSPlatform("windows")]
     /// <inheritdoc />
     /// <summary>
     /// Container class for all the color and style elements to define a theme
@@ -24,11 +26,7 @@ namespace mRemoteNG.Themes
 
         #region Constructors
 
-        public ThemeInfo(string themeName,
-                         ThemeBase inTheme,
-                         string inURI,
-                         VisualStudioToolStripExtender.VsVersion inVersion,
-                         ExtendedColorPalette inExtendedPalette)
+        public ThemeInfo(string themeName, ThemeBase inTheme, string inURI, VisualStudioToolStripExtender.VsVersion inVersion, ExtendedColorPalette inExtendedPalette)
         {
             _name = themeName;
             _theme = inTheme;
@@ -44,10 +42,7 @@ namespace mRemoteNG.Themes
             setCustomExtenders();
         }
 
-        public ThemeInfo(string themeName,
-                         ThemeBase inTheme,
-                         string inURI,
-                         VisualStudioToolStripExtender.VsVersion inVersion)
+        public ThemeInfo(string themeName, ThemeBase inTheme, string inURI, VisualStudioToolStripExtender.VsVersion inVersion)
         {
             _name = themeName;
             _theme = inTheme;