diff --git a/requirements.txt b/requirements.txt
index 780751d..440dac2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ dockerflow==2020.10.0
 elasticsearch==7.11.0
 hupper==1.10.2
 idna==3.1
-iso8601==0.1.14
+iso8601==0.1.16
 jsonpatch==1.32
 jsonpointer==2.1
 jsonschema==3.2.0