diff --git a/elm.json b/elm.json
index 0d247c2e..a0af5af5 100644
--- a/elm.json
+++ b/elm.json
@@ -68,7 +68,7 @@
     "dependencies": {
         "BrianHicks/elm-particle": "1.3.1 <= v < 2.0.0",
         "elm/browser": "1.0.1 <= v < 2.0.0",
-        "elm/core": "1.0.3 <= v < 2.0.0",
+        "elm/core": "1.0.1 <= v < 2.0.0",
         "elm/html": "1.0.0 <= v < 2.0.0",
         "elm/json": "1.1.1 <= v < 2.0.0",
         "elm/random": "1.0.0 <= v < 2.0.0",
@@ -87,4 +87,4 @@
         "avh4/elm-program-test": "3.1.0 <= v < 4.0.0",
         "elm-explorations/test": "1.2.0 <= v < 2.0.0"
     }
-}
+}
\ No newline at end of file