diff --git a/tests/System.IO.Abstractions.TestingHelpers.Tests/System.IO.Abstractions.TestingHelpers.Tests.csproj b/tests/System.IO.Abstractions.TestingHelpers.Tests/System.IO.Abstractions.TestingHelpers.Tests.csproj
index 75b304bb0..7b9bcf00d 100644
--- a/tests/System.IO.Abstractions.TestingHelpers.Tests/System.IO.Abstractions.TestingHelpers.Tests.csproj
+++ b/tests/System.IO.Abstractions.TestingHelpers.Tests/System.IO.Abstractions.TestingHelpers.Tests.csproj
@@ -34,7 +34,7 @@
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-    <PackageReference Include="Moq" Version="4.17.2" />
+    <PackageReference Include="Moq" Version="4.18.0" />
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diff --git a/tests/System.IO.Abstractions.Tests/System.IO.Abstractions.Tests.csproj b/tests/System.IO.Abstractions.Tests/System.IO.Abstractions.Tests.csproj
index ca05aec06..db73e9e60 100644
--- a/tests/System.IO.Abstractions.Tests/System.IO.Abstractions.Tests.csproj
+++ b/tests/System.IO.Abstractions.Tests/System.IO.Abstractions.Tests.csproj
@@ -18,7 +18,7 @@
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