diff --git a/requirements.txt b/requirements.txt
index 7064e9d6..8f4103ab 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-attrs==18.2.0
+attrs==21.1.0
 boltons==18.0.1
 ruamel.yaml==0.15.80