diff --git a/flake.nix b/flake.nix
index 9877163..fab94f8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,10 +1,6 @@
 {
   inputs = {
-    # nixpkgs.url = "github:nixOS/nixpkgs";
-    nixpkgs.follows = "ocaml-overlay/nixpkgs";
-    ocaml-overlay = {
-      url = "github:nix-ocaml/nix-overlays?rev=274761cacd971c2570516141e854ccd9184fab24";
-    };
+    nixpkgs.url = "github:nixOS/nixpkgs";
     flake-utils.url = "github:numtide/flake-utils";
   };
 
@@ -26,9 +22,9 @@
           extra-substituters = "https://anmonteiro.nix-cache.workers.dev";
           extra-trusted-public-keys = "ocaml.nix-cache.com-1:/xI2h2+56rwFfKyyFVbkJSeGqSIYMC/Je+7XXqGKDIY=";
         };
-        inherit (pkgs) mkShell ocaml-ng;
+        inherit (pkgs) mkShell ocamlPackages ocaml-ng;
         inherit
-          (ocaml-ng.ocamlPackages_5_2)
+          (ocamlPackages)
           dune_3
           ocaml
           utop
@@ -109,7 +105,7 @@
       overlays.culr = final: prev: let
         ocaml-deps = let
           inherit
-            (prev.ocaml-ng.ocamlPackages_5_2)
+            (prev.ocamlPackages)
             dune_3
             ocaml
             angstrom