diff --git a/setup.py b/setup.py
index 0e9d0e9a997..70ae7301429 100644
--- a/setup.py
+++ b/setup.py
@@ -963,7 +963,7 @@ def detect_tkinter(self, inc_dirs, lib_dirs):
         # The versions with dots are used on Unix, and the versions without
         # dots on Windows, for detection by cygwin.
         tcllib = tklib = tcl_includes = tk_includes = None
-        for version in ['8.4', '84', '8.3', '83', '8.2',
+        for version in ['8.5', '85', '8.4', '84', '8.3', '83', '8.2',
                         '82', '8.1', '81', '8.0', '80']:
             tklib = self.compiler.find_library_file(lib_dirs, 'tk' + version)
             tcllib = self.compiler.find_library_file(lib_dirs, 'tcl' + version)