diff --git a/nancy/__init__.py b/nancy/__init__.py
index 7274626..30e19bc 100644
--- a/nancy/__init__.py
+++ b/nancy/__init__.py
@@ -18,7 +18,8 @@
 
 from .warnings_util import simple_warning, die
 
-logging.basicConfig(level=logging.DEBUG)
+if "DEBUG" in os.environ:
+    logging.basicConfig(level=logging.DEBUG)
 
 VERSION = importlib.metadata.version("nancy")