diff --git a/attack_data_service/requirements.txt b/attack_data_service/requirements.txt
index 46adb75c..8ca05004 100644
--- a/attack_data_service/requirements.txt
+++ b/attack_data_service/requirements.txt
@@ -19,7 +19,7 @@ cffi==1.15.0
 cfgv==3.3.1
 chardet==5.2.0
 configparser==5.1.0
-contextlib2==0.6.0.post1
+contextlib2==21.6.0
 cryptography==41.0.1
 Deprecated==1.2.13
 dnspython==2.1.0