diff --git a/setup.py b/setup.py
index 16a31ff..e6a396f 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@
       py_modules=['tap_slack'],
       install_requires=[
           'pipelinewise-singer-python==1.*',
-          'slack-sdk==3.20.0',
+          'slack-sdk==3.21.2',
       ],
       extras_require={
           'test': [