diff --git a/flake.nix b/flake.nix
index 61dd80f63..b7de714e8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -46,5 +46,9 @@
           meta.description = "REST API for any Postgres database";
         };
       });
+
+      devShells = genSystems (postgrest: {
+        default = import ./shell.nix { inherit postgrest; };
+      });
     };
 }
diff --git a/shell.nix b/shell.nix
index 2b9ae55ce..48406f283 100644
--- a/shell.nix
+++ b/shell.nix
@@ -7,11 +7,9 @@
 # We highly recommend that use the PostgREST binary cache by installing cachix
 # (https://app.cachix.org/) and running `cachix use postgrest`.
 { docker ? false
+, postgrest ? import ./default.nix { }
 }:
 let
-  postgrest =
-    import ./default.nix { };
-
   inherit (postgrest) pkgs;
 
   inherit (pkgs) lib;