diff --git a/default.nix b/default.nix
index bc2b5e6..21c4c4e 100644
--- a/default.nix
+++ b/default.nix
@@ -2,6 +2,11 @@
 , pngquant, libwebp, ... }:
 
 let
+  workingElmPackages = if elmPackages.elmVersion == "0.19.1" then
+    elmPackages
+  else
+    (import <unstable> { }).elmPackages;
+
   pnpm2nix = pkgs.callPackage (builtins.fetchGit {
     url = "https://github.com/notgne2/pnpm2nix.git";
     rev = "909accd35d23664254b43109ee58cd0c3d83a6d9";