diff --git a/src/mio/yum.py b/src/mio/yum.py
index ab9d34ede9ba7dc266c5218a5aa5c9dbd7a6e497..f0f733eabac5137b02bfb2e3df06168141c633a7 100755
--- a/src/mio/yum.py
+++ b/src/mio/yum.py
@@ -58,7 +58,8 @@ def conf(path):
                "pkgpolicy=newest",
                "distroverpkg=fedora-release",
                "tolerant=1",
-               "exactarch=1" ]
+               "exactarch=1",
+               "obsoletes=1" ]
 
     dir = yumdir(path)
     for d in dir: