diff --git a/src/BirdsiteLive.Cryptography/BirdsiteLive.Cryptography.csproj b/src/BirdsiteLive.Cryptography/BirdsiteLive.Cryptography.csproj
index 0b87b04..16389e3 100644
--- a/src/BirdsiteLive.Cryptography/BirdsiteLive.Cryptography.csproj
+++ b/src/BirdsiteLive.Cryptography/BirdsiteLive.Cryptography.csproj
@@ -7,7 +7,7 @@
   <ItemGroup>
     <PackageReference Include="Asn1" Version="1.0.9" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
-    <PackageReference Include="Portable.BouncyCastle" Version="1.8.6.7" />
+    <PackageReference Include="Portable.BouncyCastle" Version="1.9.0" />
   </ItemGroup>
 
 </Project>