--- a/hgext3rd/evolve/utility.py	Wed Jul 25 14:47:16 2018 -0700
+++ b/hgext3rd/evolve/utility.py	Wed Jul 25 15:30:37 2018 -0700
@@ -109,7 +109,7 @@
                         succ = repo[node].rev()
                         if succ in revs:
                             tset.add(succ)
-                dependencies[r] = tset
+                dependencies[r].update(tset)
                 continue
             if succ in revs:
                 dependencies[r].add(succ)