diff --git a/AwsCryptographyPrimitives/runtimes/net/Crypto.csproj b/AwsCryptographyPrimitives/runtimes/net/Crypto.csproj
index 9faf18457..1cc1b70c1 100644
--- a/AwsCryptographyPrimitives/runtimes/net/Crypto.csproj
+++ b/AwsCryptographyPrimitives/runtimes/net/Crypto.csproj
@@ -59,7 +59,7 @@
   <ItemGroup>
     <PackageReference Include="AWSSDK.Core" Version="3.7.304.2" />
     <PackageReference Include="DafnyRuntime" Version="[4.2.0,$(DafnyVersion)]" />
-    <PackageReference Include="BouncyCastle.Cryptography" Version="2.3.1" />
+    <PackageReference Include="BouncyCastle.Cryptography" Version="2.4.0" />
     <ProjectReference Include="../../../StandardLibrary/runtimes/net/STD.csproj" />
 
     <!--