lib/et-orbi/zones.rb in et-orbi-1.2.4 vs lib/et-orbi/zones.rb in et-orbi-1.2.5

@@ -11,10 +11,10 @@
           (?:[0-1][0-9]|2[0-4])
           (?:(?::)?(?:[0-5][0-9]|60))?
           (?![-+])
             |Z
         )
-      }x
+      }x.freeze
 
     # https://en.wikipedia.org/wiki/ISO_8601
     # Postel's law applies
     #
     def list_iso8601_zones(s)