diff --git a/NFC/NFC.csproj b/NFC/NFC.csproj
index 4635b2c..3bff2a9 100644
--- a/NFC/NFC.csproj
+++ b/NFC/NFC.csproj
@@ -5,8 +5,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="log4net" Version="2.0.12" />
-    <PackageReference Include="Portable.BouncyCastle" Version="1.8.10" />
+    <PackageReference Include="log4net" Version="2.0.15" />
+    <PackageReference Include="Portable.BouncyCastle" Version="1.9.0" />
   </ItemGroup>
 
 </Project>
diff --git a/NFC_PCSC/NFC_PCSC.csproj b/NFC_PCSC/NFC_PCSC.csproj
index f9d0cdc..a54e9d5 100644
--- a/NFC_PCSC/NFC_PCSC.csproj
+++ b/NFC_PCSC/NFC_PCSC.csproj
@@ -5,8 +5,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="PCSC" Version="5.0.0" />
-    <PackageReference Include="PCSC.Iso7816" Version="5.0.0" />
+    <PackageReference Include="PCSC" Version="6.1.3" />
+    <PackageReference Include="PCSC.Iso7816" Version="6.1.3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/NFC_Test/NFC_Test.csproj b/NFC_Test/NFC_Test.csproj
index d2f6e30..b56df76 100644
--- a/NFC_Test/NFC_Test.csproj
+++ b/NFC_Test/NFC_Test.csproj
@@ -5,10 +5,10 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
-    <PackageReference Include="NSubstitute" Version="4.2.2" />
-    <PackageReference Include="NUnit" Version="3.13.1" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
+    <PackageReference Include="NSubstitute" Version="4.4.0" />
+    <PackageReference Include="NUnit" Version="3.13.3" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.3.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/NFC_iOS/NFC_iOS.csproj b/NFC_iOS/NFC_iOS.csproj
index d6b49b6..2500979 100644
--- a/NFC_iOS/NFC_iOS.csproj
+++ b/NFC_iOS/NFC_iOS.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Xamarin.Forms" Version="5.0.0.2012" />
+    <PackageReference Include="Xamarin.Forms" Version="5.0.0.2545" />
   </ItemGroup>
 
   <ItemGroup>