diff --git a/packaging/dotnet-core/prepare.py b/packaging/dotnet-core/prepare.py
index ee174513..146c6238 100644
--- a/packaging/dotnet-core/prepare.py
+++ b/packaging/dotnet-core/prepare.py
@@ -8,8 +8,8 @@ WINDOWS = [
   # --------------------- ----------------- #
   # Runtime ID            Platform          #
   # --------------------- ----------------- #
-  ( 'win10-x64',          'x64'             ),
-  ( 'win10-x86',          'Win32'           ),
+  ( 'win7-x64',           'x64'             ),
+  ( 'win7-x86',           'Win32'           ),
   # --------------------- ----------------- #
 ]