diff --git a/parsons/utilities/dbt.py b/parsons/utilities/dbt.py
index ffe35a1f0c..8ecd5b2812 100644
--- a/parsons/utilities/dbt.py
+++ b/parsons/utilities/dbt.py
@@ -6,9 +6,6 @@
 or `pip install parsons[dbt-snowflake]`
 or `pip install parsons[dbt-bigquery]`
 
-For the slack integration to work, you'll need to include the slack extra:
-`pip install parsons[dbt-redshift,slack]`, etc.
-
 To run dbt commands, you will need to have a dbt project directory
 somewhere on the local filesystem.
 
diff --git a/setup.py b/setup.py
index d141871349..63147c0d51 100644
--- a/setup.py
+++ b/setup.py
@@ -21,10 +21,10 @@ def main():
             "box": ["boxsdk"],
             "braintree": ["braintree"],
             "civis": ["civis"],
-            "dbt-redshift": ["dbt-redshift"],
-            "dbt-bigquery": ["dbt-bigquery"],
-            "dbt-postgres": ["dbt-postgres"],
-            "dbt-snowflake": ["dbt-snowflake"],
+            "dbt-redshift": ["dbt-redshift","slackclient<2"],
+            "dbt-bigquery": ["dbt-bigquery","slackclient<2"],
+            "dbt-postgres": ["dbt-postgres","slackclient<2"],
+            "dbt-snowflake": ["dbt-snowflake","slackclient<2"],
             "facebook": ["joblib", "facebook-business"],
             "geocode": ["censusgeocode"],
             "github": ["PyGitHub"],