diff --git a/requirements/development.txt b/requirements/development.txt
index 8229a7ed5..b35120d88 100644
--- a/requirements/development.txt
+++ b/requirements/development.txt
@@ -34,7 +34,7 @@ cycler==0.12.1
     # via matplotlib
 db-dtypes==1.3.1
     # via pandas-gbq
-dill==0.3.8
+dill==0.3.9
     # via pylint
 distlib==0.3.8
     # via virtualenv