diff --git a/src/libfintx.EBICS/Commands/Command.cs b/src/libfintx.EBICS/Commands/Command.cs
index 7545c27..20cf60c 100644
--- a/src/libfintx.EBICS/Commands/Command.cs
+++ b/src/libfintx.EBICS/Commands/Command.cs
@@ -312,12 +312,17 @@ protected XmlDocument AuthenticateXml(XmlDocument doc, string referenceUri,
 
         protected byte[] SignData(byte[] data, SignKeyPair kp)
         {
-            if (kp.Version != SignVersion.A005)
+            if (kp.Version == SignVersion.A005)
             {
-                throw new CryptographicException($"Only signature version {SignVersion.A005} is supported right now");
+                return kp.PrivateKey.SignData(data, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
+            }
+            else if (kp.Version == SignVersion.A006)
+            {
+                return kp.PrivateKey.SignData(data, HashAlgorithmName.SHA256, RSASignaturePadding.Pss);
             }
+            else
+                throw new CryptographicException($"Only signature version {SignVersion.A005} is supported right now");
 
-            return kp.PrivateKey.SignData(data, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
         }
 
         public override string ToString()
diff --git a/src/libfintx.EBICS/libfintx.EBICS.csproj b/src/libfintx.EBICS/libfintx.EBICS.csproj
index a2288e5..c001c8c 100644
--- a/src/libfintx.EBICS/libfintx.EBICS.csproj
+++ b/src/libfintx.EBICS/libfintx.EBICS.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFramework>net462</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/libfintx.EBICSConfig/libfintx.EBICSConfig.csproj b/src/libfintx.EBICSConfig/libfintx.EBICSConfig.csproj
index 1b9deb6..ad1a0a9 100644
--- a/src/libfintx.EBICSConfig/libfintx.EBICSConfig.csproj
+++ b/src/libfintx.EBICSConfig/libfintx.EBICSConfig.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFramework>net462</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>