diff --git a/emsdk b/emsdk
index faa5747..553ad69 100755
--- a/emsdk
+++ b/emsdk
@@ -1316,7 +1316,7 @@ class Tool:
         success = build_fastcomp_tool(self)
       elif hasattr(self, 'git_branch'):
         success = git_clone_checkout_and_pull(url, self.installation_path(), self.git_branch)
-      elif url.endswith('zip') or url.endswith('.tar') or url.endswith('.gz'):
+      elif url.endswith('zip') or url.endswith('.tar') or url.endswith('.gz') or url.endswith('.xz'):
         download_even_if_exists = (self.id == 'vs-tool')
         success = download_and_unzip(url, self.installation_path(), download_even_if_exists, filename_prefix=self.zipfile_prefix if hasattr(self, 'zipfile_prefix') else '')
       else: