diff --git a/elm.json b/elm.json
index ec04445d..83a2bd94 100644
--- a/elm.json
+++ b/elm.json
@@ -71,7 +71,6 @@
         "noahzgordon/elm-color-extra": "1.0.2 <= v < 2.0.0",
         "robinheghan/fnv1a": "1.0.0 <= v < 2.0.0",
         "rtfeldman/elm-css": "17.1.1 <= v < 18.0.0",
-        "rtfeldman/elm-iso8601-date-strings": "1.1.4 <= v < 2.0.0",
         "the-sett/elm-syntax-dsl": "6.0.2 <= v < 7.0.0",
         "turboMaCk/non-empty-list-alias": "1.2.0 <= v < 2.0.0",
         "vito/elm-ansi": "10.0.1 <= v < 11.0.0"