--- a/requests/certs.py	2017-05-29 20:09:29.000000000 +0200
+++ b/requests/certs.py	2017-06-06 13:06:31.803000513 +0200
@@ -12,7 +12,8 @@
 environment, you can change the definition of where() to return a separately
 packaged CA bundle.
 """
-from certifi import where
+def where():
+    return '/etc/ssl/certs/ca-certificates.crt'
 
 if __name__ == '__main__':
     print(where())