diff --git a/labsw/__init__.py b/labsw/__init__.py
index 6a81e1e..d3684df 100644
--- a/labsw/__init__.py
+++ b/labsw/__init__.py
@@ -1 +1 @@
-__version__ = '0.1.6.4'
+__version__ = '0.1.6.5'
diff --git a/labsw/io.py b/labsw/io.py
index d3131f2..92df237 100644
--- a/labsw/io.py
+++ b/labsw/io.py
@@ -14,7 +14,7 @@ def load_data_RH_logger(filepath, every=1):
     """
     # Read the header
     if filepath.endswith('gz'):
-        with gzip.open(filepath, 'r') as f:
+        with gzip.open(filepath, 'rt') as f:
             header = f.readline()
     else:
         with open(filepath, 'r') as f: