diff --git a/pym/update/update.py b/pym/update/update.py
index 1234b0b..222945c 100644
--- a/pym/update/update.py
+++ b/pym/update/update.py
@@ -552,6 +552,7 @@ class Update(MethodsInterface):
         if pkg_key in self.update_map:
             self.startTask(_("Installing {pkg} [{oldver}]").format(
                 pkg=_print(str(pkg)), oldver=self.update_map[ pkg_key]))
+            self.update_map.pop(pkg_key)
         else:
             self.startTask(_("Installing %s") % (_print(str(pkg))))