diff --git a/setup.py b/setup.py
index 13d7723..44dc56d 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@
       ],
       py_modules=['tap_slack'],
       install_requires=[
-          'pipelinewise-singer-python==1.*',
+          'pipelinewise-singer-python>=1,<3',
           'slackclient==2.6.0',
       ],
       extras_require={