diff --git a/Directory.Build.props b/Directory.Build.props
index a74b204436..b55eff9df9 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -28,9 +28,17 @@
     <NoWarn>$(NoWarn);CS1591</NoWarn>
   </PropertyGroup>
   <PropertyGroup Label="Project">
-    <!-- DeepEqual is not netstandard-compatible. This is fine since we run tests with .NET Framework anyway.
-    This is required due to https://github.com/NuGet/Home/issues/5740 -->
-    <NoWarn>$(NoWarn);NU1701</NoWarn>
+    <!--
+    NU1701:
+      DeepEqual is not netstandard-compatible. This is fine since we run tests with .NET Framework anyway.
+      This is required due to https://github.com/NuGet/Home/issues/5740
+
+    CA9998:
+      Microsoft.CodeAnalysis.FxCopAnalyzers has been deprecated.
+      The entire package will be able to be removed after migrating to .NET 5,
+      as analysers are shipped as part of the .NET 5 SDK anyway.
+    -->
+    <NoWarn>$(NoWarn);NU1701;CA9998</NoWarn>
   </PropertyGroup>
   <PropertyGroup Label="Nuget">
     <IsPackable>false</IsPackable>
@@ -43,4 +51,4 @@
     <Copyright>Copyright (c) 2020 ppy Pty Ltd</Copyright>
     <PackageTags>osu game</PackageTags>
   </PropertyGroup>
-</Project>
\ No newline at end of file
+</Project>