diff --git a/tasks.py b/tasks.py
index c7e4f42c..12116da3 100644
--- a/tasks.py
+++ b/tasks.py
@@ -42,7 +42,8 @@ def docserve(c):
 @task
 def tests(c):
     """Run the test suite"""
-    c.run(f"{VENV_BIN}/pytest", pty=True)
+    PTY = True if os.name != "nt" else False
+    c.run(f"{VENV_BIN}/pytest", pty=PTY)
 
 
 @task