diff --git a/Constant.JsonConverter.Tests.Unit/Constant.JsonConverter.Tests.Unit.csproj b/Constant.JsonConverter.Tests.Unit/Constant.JsonConverter.Tests.Unit.csproj
index f8e5dc6..801f71e 100644
--- a/Constant.JsonConverter.Tests.Unit/Constant.JsonConverter.Tests.Unit.csproj
+++ b/Constant.JsonConverter.Tests.Unit/Constant.JsonConverter.Tests.Unit.csproj
@@ -8,7 +8,7 @@
 
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+    <PackageReference Include="xunit" Version="2.4.2" />
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       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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diff --git a/Constant.Tests.Unit/Constant.Tests.Unit.csproj b/Constant.Tests.Unit/Constant.Tests.Unit.csproj
index 9ee1649..95238e9 100644
--- a/Constant.Tests.Unit/Constant.Tests.Unit.csproj
+++ b/Constant.Tests.Unit/Constant.Tests.Unit.csproj
@@ -8,7 +8,7 @@
 
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