diff --git a/tests/cyclonedx.tests/cyclonedx.tests.csproj b/tests/cyclonedx.tests/cyclonedx.tests.csproj
index 859a407..f669154 100644
--- a/tests/cyclonedx.tests/cyclonedx.tests.csproj
+++ b/tests/cyclonedx.tests/cyclonedx.tests.csproj
@@ -9,7 +9,7 @@
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+    <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
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