diff --git a/modules/hooks.nix b/modules/hooks.nix
index 37926c4e..c8b027e7 100644
--- a/modules/hooks.nix
+++ b/modules/hooks.nix
@@ -464,6 +464,13 @@ in
           entry = "${tools.purty}/bin/purty";
           files = "\\.purs$";
         };
+      purs-tidy =
+        {
+          name = "purs-tidy";
+          description = "Format purescript files";
+          entry = "${tools.purs-tidy}/bin/purs-tidy format-in-place";
+          files = "\\.purs$";
+        };
       prettier =
         {
           name = "prettier";
diff --git a/nix/tools.nix b/nix/tools.nix
index 6f2d938c..9069ac51 100644
--- a/nix/tools.nix
+++ b/nix/tools.nix
@@ -48,7 +48,7 @@
   # TODO: these two should be statically compiled
   inherit (haskellPackages) brittany fourmolu;
   inherit (luaPackages) luacheck;
-  inherit (nodePackages) eslint markdownlint-cli prettier;
+  inherit (nodePackages) eslint markdownlint-cli prettier purs-tidy;
   inherit (python39Packages) ansible-lint yamllint;
   cabal2nix-dir = callPackage ./cabal2nix-dir { };
   hpack-dir = callPackage ./hpack-dir { };