diff --git a/src/Akavache.Tests/Akavache.Tests.csproj b/src/Akavache.Tests/Akavache.Tests.csproj
index c8ec3976e..80ce31f8b 100644
--- a/src/Akavache.Tests/Akavache.Tests.csproj
+++ b/src/Akavache.Tests/Akavache.Tests.csproj
@@ -21,7 +21,7 @@
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+    <PackageReference Include="DiffEngine" Version="6.5.5" />
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