diff --git a/src/Microsoft.AspNetCore.Http.Abstractions/Microsoft.AspNetCore.Http.Abstractions.csproj b/src/Microsoft.AspNetCore.Http.Abstractions/Microsoft.AspNetCore.Http.Abstractions.csproj
index d0714cb..6bdf9c8 100644
--- a/src/Microsoft.AspNetCore.Http.Abstractions/Microsoft.AspNetCore.Http.Abstractions.csproj
+++ b/src/Microsoft.AspNetCore.Http.Abstractions/Microsoft.AspNetCore.Http.Abstractions.csproj
@@ -39,7 +39,7 @@ Microsoft.AspNetCore.Http.HttpResponse</Description>
     <PackageReference Include="Microsoft.Extensions.TaskCache.Sources" Version="1.1.1">
       <PrivateAssets>All</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="System.Text.Encodings.Web" Version="4.3.1" />
+    <PackageReference Include="System.Text.Encodings.Web" Version="4.5.1" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net451' ">
diff --git a/src/Microsoft.AspNetCore.Http.Extensions/Microsoft.AspNetCore.Http.Extensions.csproj b/src/Microsoft.AspNetCore.Http.Extensions/Microsoft.AspNetCore.Http.Extensions.csproj
index bf89877..0e81852 100644
--- a/src/Microsoft.AspNetCore.Http.Extensions/Microsoft.AspNetCore.Http.Extensions.csproj
+++ b/src/Microsoft.AspNetCore.Http.Extensions/Microsoft.AspNetCore.Http.Extensions.csproj
@@ -31,7 +31,7 @@
     <PackageReference Include="Microsoft.Extensions.FileProviders.Abstractions" Version="1.1.1" />
     <PackageReference Include="Microsoft.Net.Http.Headers" Version="1.1.2" />
     <PackageReference Include="System.Buffers" Version="4.3.0" />
-    <PackageReference Include="System.Text.Encodings.Web" Version="4.3.1" />
+    <PackageReference Include="System.Text.Encodings.Web" Version="4.5.1" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net451' ">