diff --git a/src/pycalver/__main__.py b/src/pycalver/__main__.py
index 6f61d98..441f091 100644
--- a/src/pycalver/__main__.py
+++ b/src/pycalver/__main__.py
@@ -35,6 +35,9 @@ except ImportError:
     pass
 
 
+click.disable_unicode_literals_warning = True
+
+
 log = logging.getLogger("pycalver.cli")