diff --git a/shell.nix b/shell.nix
index 5876a5228..ddac86916 100644
--- a/shell.nix
+++ b/shell.nix
@@ -35,5 +35,10 @@ lib.overrideDerivation postgrest.env (
       ++ lib.optional memoryTests postgrest.tests.memoryTests
       ++ lib.optional docker postgrest.docker
       ++ lib.optional release postgrest.release;
+
+    shellHook =
+      ''
+        complete -c postgrest-watch
+      '';
   }
 )