diff -uNr wheel-0.31.1.orig/setup.py wheel-0.31.1/setup.py
--- wheel-0.31.1.orig/setup.py	2018-05-13 19:22:12.000000000 +0200
+++ wheel-0.31.1/setup.py	2018-07-08 00:32:02.918116087 +0200
@@ -39,7 +39,7 @@
       packages=find_packages(),
       python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
       extras_require={
-          'signatures': ['keyring', 'keyrings.alt'],
+          'signatures': ['keyring'],
           'signatures:sys_platform!="win32"': ['pyxdg'],
           'faster-signatures': ['ed25519ll'],
           'test': ['pytest >= 3.0.0', 'pytest-cov']
diff -uNr wheel-0.31.1.orig/wheel/tool/__init__.py wheel-0.31.1/wheel/tool/__init__.py
--- wheel-0.31.1.orig/wheel/tool/__init__.py	2018-05-13 19:22:12.000000000 +0200
+++ wheel-0.31.1/wheel/tool/__init__.py	2018-07-08 00:32:21.442263844 +0200
@@ -33,10 +33,9 @@
     try:
         from ..signatures import keys
         import keyring
-        assert keyring.get_keyring().priority
     except (ImportError, AssertionError):
         raise WheelError(
-            "Install wheel[signatures] (requires keyring, keyrings.alt, pyxdg) for signatures.")
+            "Install wheel[signatures] (requires keyring, pyxdg) for signatures.")
 
     return keys.WheelKeys, keyring