diff --git a/shell.nix b/shell.nix
index 39ae1cd..2e21a60 100644
--- a/shell.nix
+++ b/shell.nix
@@ -2,11 +2,13 @@
   pkgs.mkShell {
     # nativeBuildInputs is usually what you want -- tools you need to run
     nativeBuildInputs =
-      let erlpkgs = pkgs.buildPackages.beam.packages.erlangR24;
+      let erlpkgs = pkgs.buildPackages.beam.packages.erlangR25;
       in [
         erlpkgs.elixir
         erlpkgs.hex
-        erlpkgs.rebar3
-        pkgs.libsodium
       ];
+
+    buildInputs = [
+      pkgs.libsodium
+    ];
   }