diff --git a/stix_shifter/requirements.txt b/stix_shifter/requirements.txt
index 36ccc4899..e7586bbce 100644
--- a/stix_shifter/requirements.txt
+++ b/stix_shifter/requirements.txt
@@ -4,7 +4,7 @@ aiomysql==0.2.0
 antlr4-python3-runtime==4.8
 asyncio==3.4.3
 asynctest==0.13.0
-attrs==22.2.0
+attrs==23.1.0
 azure-identity==1.12.0
 colorlog==6.7.0
 flask==2.3.3