diff --git a/gsw/__init__.py b/gsw/__init__.py
index 639ded2..9b5a5e2 100644
--- a/gsw/__init__.py
+++ b/gsw/__init__.py
@@ -4,9 +4,9 @@
 from .utilities import (Bunch, match_args_return, read_data, strip_mask,
                         loadmatbunch)
 
-data = read_data("gsw_data_v3_0.npz")
+data = read_data('gsw_data_v3_0.npz')
 
-__version__ = "3.0.5"
+__version__ = '3.0.6'
 __all__ = ['gibbs', 'utilities']
 __data_date__ = str(data['version_date'])
 __data_version__ = str(data['version_number'])