diff --git a/README.md b/README.md
index f6e7935..d2e9bbf 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,8 @@ dbt-core ~= 1.1.0
 
 impyla >= 0.18a5
 
+python-decouple >= 3.6
+
 ### Installing dbt-impala
 
 `pip install dbt-impala`