diff --git a/flake.nix b/flake.nix
index 31da7fb4e46..7519fde55fa 100644
--- a/flake.nix
+++ b/flake.nix
@@ -80,6 +80,8 @@
           '';
 
           shell = {
+            # Due to plutus-tx-plugin being a bit special, we need to augment the default package selection.
+            packages = ps: builtins.attrValues (nixpkgs.haskell-nix.haskellLib.selectLocalPackages ps) ++ [ps.plutus-tx-plugin];
 
             # force LANG to be UTF-8, otherwise GHC might choke on UTF encoded data.
             shellHook = ''