diff --git a/requirements.txt b/requirements.txt
index 7064e9d6..3fe568b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 attrs==18.2.0
-boltons==18.0.1
+boltons==21.0.0
 ruamel.yaml==0.15.80