diff --git a/IntroToSpans/IntroToSpans.csproj b/IntroToSpans/IntroToSpans.csproj
index a8c7863..415be74 100644
--- a/IntroToSpans/IntroToSpans.csproj
+++ b/IntroToSpans/IntroToSpans.csproj
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="8.0.0">
+    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="9.0.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
diff --git a/SpanBenchmarks/SpanBenchmarks.csproj b/SpanBenchmarks/SpanBenchmarks.csproj
index 58e87c4..9251ce5 100644
--- a/SpanBenchmarks/SpanBenchmarks.csproj
+++ b/SpanBenchmarks/SpanBenchmarks.csproj
@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="BenchmarkDotNet" Version="0.14.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="8.0.0">
+    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="9.0.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>