diff --git a/requirements.txt b/requirements.txt
index e60ef95..cf68984 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ idna==2.9
 itsdangerous==1.1.0
 Jinja2==2.11.1
 jsonschema==3.2.0
-libtaxii==1.1.116
+libtaxii==1.1.118
 lxml==4.5.0
 MarkupSafe==1.1.1
 mixbox==1.0.3