diff --git a/mercurial/context.py b/mercurial/context.py
--- a/mercurial/context.py
+++ b/mercurial/context.py
@@ -224,7 +224,7 @@ class basectx(object):
 
         Only non-public and non-obsolete changesets may be bumped.
         """
-        return self.rev() in obsmod.getrevs(self._repo, 'bumped')
+        return self.rev() in obsmod.getrevs(self._repo, 'phasedivergent')
 
     def divergent(self):
         msg = ("'context.divergent' is deprecated, "
diff --git a/mercurial/obsolete.py b/mercurial/obsolete.py
--- a/mercurial/obsolete.py
+++ b/mercurial/obsolete.py
@@ -942,9 +942,16 @@ def _computeextinctset(repo):
     """the set of obsolete parents without non obsolete descendants"""
     return getrevs(repo, 'obsolete') - getrevs(repo, 'suspended')
 
-
 @cachefor('bumped')
 def _computebumpedset(repo):
+    msg = ("'bumped' volatile set is deprecated, "
+           "use 'phasedivergent'")
+    repo.ui.deprecwarn(msg, '4.4')
+
+    return _computephasedivergentset(repo)
+
+@cachefor('phasedivergent')
+def _computephasedivergentset(repo):
     """the set of revs trying to obsolete public revisions"""
     bumped = set()
     # util function (avoid attribute lookup in the loop)
diff --git a/mercurial/revset.py b/mercurial/revset.py
--- a/mercurial/revset.py
+++ b/mercurial/revset.py
@@ -473,8 +473,8 @@ def phasedivergent(repo, subset, x):
     """
     # i18n: "phasedivergent" is a keyword
     getargs(x, 0, 0, _("phasedivergent takes no arguments"))
-    bumped = obsmod.getrevs(repo, 'bumped')
-    return subset & bumped
+    phasedivergent = obsmod.getrevs(repo, 'phasedivergent')
+    return subset & phasedivergent
 
 @predicate('bundle()', safe=True)
 def bundle(repo, subset, x):