diff --git a/src/LtiAdvantage/LtiAdvantage.csproj b/src/LtiAdvantage/LtiAdvantage.csproj
index e43a9fa..f366987 100644
--- a/src/LtiAdvantage/LtiAdvantage.csproj
+++ b/src/LtiAdvantage/LtiAdvantage.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <Description>.NET Core library with IMS LTIAdvantage support for Tool Consumer and Tool Provider applications.</Description>
@@ -23,7 +23,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="BouncyCastle.NetCore" Version="1.8.3" />
+    <PackageReference Include="BouncyCastle.NetCore" Version="1.9.0" />
     <PackageReference Include="MinVer" Version="2.3.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>