diff --git a/Source/AntimatterAnnihilation/AntimatterAnnihilation.csproj b/Source/AntimatterAnnihilation/AntimatterAnnihilation.csproj
index 6d8a408..f9b55fb 100644
--- a/Source/AntimatterAnnihilation/AntimatterAnnihilation.csproj
+++ b/Source/AntimatterAnnihilation/AntimatterAnnihilation.csproj
@@ -36,7 +36,7 @@
 
   <!-- Rimworld assembly refs for latest 1.4 -->
   <ItemGroup Condition="'$(Configuration)|$(Platform)'=='v1.4|AnyCPU'">
-	  <PackageReference Include="Krafs.Rimworld.Ref" Version="1.4.3507-beta" />
+	  <PackageReference Include="Krafs.Rimworld.Ref" Version="1.4.3641" />
   </ItemGroup>
 
   <!-- Output -->