diff --git a/boss/cli/template.py b/boss/cli/template.py
index 9b8f246..885599a 100644
--- a/boss/cli/template.py
+++ b/boss/cli/template.py
@@ -262,7 +262,11 @@ def copy(self, dest_basedir):
 
         # first handle local files
         for tmpl_path in self._walk_path(self.basedir):
-            dest_path = fs.abspath(re.sub(self.basedir, dest_basedir, tmpl_path))
+            # Fix "sre_constants.error: bogus escape: '\\U'" on Windows
+            basedir = self.basedir.replace('\\', '/')
+            destdir = dest_basedir.replace('\\', '/')
+            tmpl_path = tmpl_path.replace('\\', '/')
+            dest_path = fs.abspath(re.sub(basedir, destdir, tmpl_path))
             self._copy_path(tmpl_path, dest_path)
 
         # second handle external files