diff --git a/flake.nix b/flake.nix
index b1fe3fe..63107a7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -111,12 +111,13 @@
       overlays.culr = final: prev: let
         ocaml-deps = let
           inherit
-            (prev.ocamlPackages)
+            (final.ocamlPackages)
             dune_3
             ocaml
             angstrom
             angstrom-unix
             ppx_inline_test
+            opaline
             ;
         in [
           dune_3
@@ -124,6 +125,7 @@
           angstrom
           angstrom-unix
           ppx_inline_test
+          opaline
         ];
       in {
         culr = final.callPackage ./nix/default.nix {
diff --git a/nix/module.nix b/nix/module.nix
index b44cb16..90e3b76 100644
--- a/nix/module.nix
+++ b/nix/module.nix
@@ -1,4 +1,4 @@
 {overlays}: {
-  imports = [./culr-module.nix];
   nixpkgs.overlays = overlays;
+  imports = [./culr-module.nix];
 }