diff --git a/tests/SimpleOptics.UnitTests.fsproj b/tests/SimpleOptics.UnitTests.fsproj
index 8924a96..0086931 100644
--- a/tests/SimpleOptics.UnitTests.fsproj
+++ b/tests/SimpleOptics.UnitTests.fsproj
@@ -13,7 +13,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Expecto" Version="10.2.3" />
-    <PackageReference Include="FsCheck" Version="2.16.6" />
+    <PackageReference Include="FsCheck" Version="3.3.1" />
     <PackageReference Include="Expecto.FsCheck" Version="10.2.3" />
     <PackageReference Include="Fable.Mocha" Version="2.17.0" />
   </ItemGroup>