diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 106c09f79c..dc27a61f57 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -9,9 +9,9 @@
 -->
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.AspNetCore.Blazor.Mono" Version="3.1.0-preview2.19523.1">
+    <Dependency Name="Microsoft.AspNetCore.Blazor.Mono" Version="3.1.0-preview3.19530.1">
       <Uri>https://github.com/aspnet/Blazor</Uri>
-      <Sha>1eea415dd9381f7f13585fe3a5c60ce73ce65174</Sha>
+      <Sha>88035135ca31bc5a613ae7a53af6d8198c948c08</Sha>
     </Dependency>
     <Dependency Name="Microsoft.AspNetCore.Razor.Language" Version="3.1.0-preview3.19530.2">
       <Uri>https://github.com/aspnet/AspNetCore-Tooling</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index f81f243e65..164572b0d5 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -96,7 +96,7 @@
     <!-- Only listed explicitly to workaround https://github.com/dotnet/cli/issues/10528 -->
     <MicrosoftNETCorePlatformsPackageVersion>3.1.0-preview2.19518.6</MicrosoftNETCorePlatformsPackageVersion>
     <!-- Packages from aspnet/Blazor -->
-    <MicrosoftAspNetCoreBlazorMonoPackageVersion>3.1.0-preview2.19523.1</MicrosoftAspNetCoreBlazorMonoPackageVersion>
+    <MicrosoftAspNetCoreBlazorMonoPackageVersion>3.1.0-preview3.19530.1</MicrosoftAspNetCoreBlazorMonoPackageVersion>
     <!-- Packages from aspnet/Extensions -->
     <InternalAspNetCoreAnalyzersPackageVersion>3.1.0-preview2.19518.29</InternalAspNetCoreAnalyzersPackageVersion>
     <MicrosoftAspNetCoreAnalyzerTestingPackageVersion>3.1.0-preview2.19518.29</MicrosoftAspNetCoreAnalyzerTestingPackageVersion>