X-Git-Url: https://git.ralfj.de/zonemaker.git/blobdiff_plain/62c56a547f92ff543b08533875a2640aef0d7e2e..574d9328bf51c40877ffb9766b87f27a246e8dc2:/zonemaker/zone.py

diff --git a/zonemaker/zone.py b/zonemaker/zone.py
index 330c184..add2bde 100644
--- a/zonemaker/zone.py
+++ b/zonemaker/zone.py
@@ -258,7 +258,7 @@ class Zone:
         try:
             with open(self._serialfile) as f:
                 cur_serial = int(f.read())
-        except OSError: # FileNotFoundError has been added in Python 3.3
+        except (OSError, IOError): # FileNotFoundError has been added in Python 3.3
             pass
         # increment serial
         cur_serial += 1