diff --git a/modules/openapi-generator/src/main/resources/elm/elm.mustache b/modules/openapi-generator/src/main/resources/elm/elm.mustache
index e4ae0f4df15..398da0d2d6d 100644
--- a/modules/openapi-generator/src/main/resources/elm/elm.mustache
+++ b/modules/openapi-generator/src/main/resources/elm/elm.mustache
@@ -15,7 +15,7 @@
             "elm/json": "1.1.2",
             "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"
         },
         "indirect": {
             "elm/bytes": "1.0.5",
diff --git a/samples/client/petstore/elm/elm.json b/samples/client/petstore/elm/elm.json
index e4ae0f4df15..398da0d2d6d 100644
--- a/samples/client/petstore/elm/elm.json
+++ b/samples/client/petstore/elm/elm.json
@@ -15,7 +15,7 @@
             "elm/json": "1.1.2",
             "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"
         },
         "indirect": {
             "elm/bytes": "1.0.5",