diff --git a/test/NSign.Abstractions.UnitTests/NSign.Abstractions.UnitTests.csproj b/test/NSign.Abstractions.UnitTests/NSign.Abstractions.UnitTests.csproj
index 5e74af9..c578bf7 100644
--- a/test/NSign.Abstractions.UnitTests/NSign.Abstractions.UnitTests.csproj
+++ b/test/NSign.Abstractions.UnitTests/NSign.Abstractions.UnitTests.csproj
@@ -11,7 +11,7 @@
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     <PackageReference Include="Moq" Version="4.20.70" />
-    <PackageReference Include="xunit" Version="2.6.5" />
+    <PackageReference Include="xunit" Version="2.6.6" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/test/NSign.AspNetCore.UnitTests/NSign.AspNetCore.UnitTests.csproj b/test/NSign.AspNetCore.UnitTests/NSign.AspNetCore.UnitTests.csproj
index 8ffb862..a47d919 100644
--- a/test/NSign.AspNetCore.UnitTests/NSign.AspNetCore.UnitTests.csproj
+++ b/test/NSign.AspNetCore.UnitTests/NSign.AspNetCore.UnitTests.csproj
@@ -12,7 +12,7 @@
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     <PackageReference Include="Moq" Version="4.20.70" />
-    <PackageReference Include="xunit" Version="2.6.5" />
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     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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diff --git a/test/NSign.BouncyCastle.UnitTests/NSign.BouncyCastle.UnitTests.csproj b/test/NSign.BouncyCastle.UnitTests/NSign.BouncyCastle.UnitTests.csproj
index 9600da5..6baf100 100644
--- a/test/NSign.BouncyCastle.UnitTests/NSign.BouncyCastle.UnitTests.csproj
+++ b/test/NSign.BouncyCastle.UnitTests/NSign.BouncyCastle.UnitTests.csproj
@@ -9,7 +9,7 @@
 
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     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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diff --git a/test/NSign.Client.UnitTests/NSign.Client.UnitTests.csproj b/test/NSign.Client.UnitTests/NSign.Client.UnitTests.csproj
index f9dcbaf..73f8f26 100644
--- a/test/NSign.Client.UnitTests/NSign.Client.UnitTests.csproj
+++ b/test/NSign.Client.UnitTests/NSign.Client.UnitTests.csproj
@@ -11,7 +11,7 @@
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       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/test/NSign.SignatureProviders.UnitTests/NSign.SignatureProviders.UnitTests.csproj b/test/NSign.SignatureProviders.UnitTests/NSign.SignatureProviders.UnitTests.csproj
index c922442..5fd4a86 100644
--- a/test/NSign.SignatureProviders.UnitTests/NSign.SignatureProviders.UnitTests.csproj
+++ b/test/NSign.SignatureProviders.UnitTests/NSign.SignatureProviders.UnitTests.csproj
@@ -10,7 +10,7 @@
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