diff --git a/pisi/version.py b/pisi/version.py
index 785fc6a4..71330c1a 100644
--- a/pisi/version.py
+++ b/pisi/version.py
@@ -33,8 +33,9 @@ keywords = {"alpha": 0,
             "beta" : 1,
             "pre"  : 2,
             "rc"   : 3,
-            "NOKEY" : 4,
-            "p"    : 5}
+            "m"    : 4,
+            "NOKEY" : 5,
+            "p"    : 6}
 
 # helper functions
 def has_keyword(versionitem):
diff --git a/tests/versiontests.py b/tests/versiontests.py
index b13915ab..71991849 100644
--- a/tests/versiontests.py
+++ b/tests/versiontests.py
@@ -41,12 +41,15 @@ class VersionTestCase(unittest.TestCase):
         v3 = Version("2.21")
         v4 = Version("2.23_p1")
         v5 = Version("2.23_beta1")
+        v6 = Version("2.23_m1")
         self.assert_(v1 < v2)
         self.assert_(v1 > v3)
         self.assert_(v1 < v4)
         self.assert_(v1 > v5)
         self.assert_(v2 < v4)
         self.assert_(v2 > v5)
+        self.assert_(v6 < v4)
+        self.assert_(v6 > v5)
 
         v1 = Version("1.0_alpha1")
         v2 = Version("1.0_alpha2")