diff --git a/ui/app/elm.json b/ui/app/elm.json
index 6a6fc20ad6..7a18130a5c 100644
--- a/ui/app/elm.json
+++ b/ui/app/elm.json
@@ -15,7 +15,7 @@
             "elm/regex": "1.0.0",
             "elm/time": "1.0.0",
             "elm/url": "1.0.0",
-            "rtfeldman/elm-iso8601-date-strings": "1.1.2",
+            "rtfeldman/elm-iso8601-date-strings": "1.1.3",
             "NoRedInk/elm-json-decode-pipeline": "1.0.0"
         },
         "indirect": {