diff --git a/Cosmic.NET/cosmo/Cosmo.csproj b/Cosmic.NET/cosmo/Cosmo.csproj
index c7e82ca..0c1b876 100644
--- a/Cosmic.NET/cosmo/Cosmo.csproj
+++ b/Cosmic.NET/cosmo/Cosmo.csproj
@@ -7,6 +7,6 @@
     <Copyright>Copyright © Joshua Kempner 2008-2021</Copyright>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="reactiveui" Version="16.4.1" />
+    <PackageReference Include="reactiveui" Version="17.0.1" />
   </ItemGroup>
 </Project>
\ No newline at end of file