diff --git a/tests/PeregrineDb.Tests/PeregrineDb.Tests.csproj b/tests/PeregrineDb.Tests/PeregrineDb.Tests.csproj
index e825906..8b6549b 100644
--- a/tests/PeregrineDb.Tests/PeregrineDb.Tests.csproj
+++ b/tests/PeregrineDb.Tests/PeregrineDb.Tests.csproj
@@ -17,7 +17,7 @@
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     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
     <PackageReference Include="Moq" Version="4.10.0" />
-    <PackageReference Include="Npgsql" Version="4.0.3" />
+    <PackageReference Include="Npgsql" Version="5.0.0" />
     <PackageReference Include="System.Collections.Concurrent" Version="4.3.0" />
     <PackageReference Include="System.Collections.NonGeneric" Version="4.3.0" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="4.5.0" />