diff --git a/overlays/10-previews.nix b/overlays/10-previews.nix
index 16e5ee1d..2480fa57 100644
--- a/overlays/10-previews.nix
+++ b/overlays/10-previews.nix
@@ -9,6 +9,7 @@ let
 in {
   laminar = laminarPkgs.laminar;
   syncthingNext = unstable.syncthing;
+  upterm = unstable.upterm;
   syncthing = unstable.syncthing;
   vimPlugins = unstable.vimPlugins;
   fzf = unstable.fzf;
diff --git a/overlays/30-ghc.nix b/overlays/30-ghc.nix
index fb8a18c2..0f7aea01 100644
--- a/overlays/30-ghc.nix
+++ b/overlays/30-ghc.nix
@@ -16,7 +16,7 @@ let
         haskell-language-server cabal-install dhall taskwarrior pandoc hlint
         cabal2nix weeder reflex-dom password optics shh-extras neuron
         hspec-discover cabal-edit paths hmatrix postgresql-simple snap
-        arbtt
+        arbtt hedgehog nix-derivation
         ;
       iCalendar = overrideCabal (doJailbreak (unmarkBroken p.iCalendar)) {
         preConfigure = ''substituteInPlace iCalendar.cabal --replace "network >=2.6 && <2.7" "network -any"'';
diff --git a/overlays/pkgSets.nix b/overlays/pkgSets.nix
index d3d1151f..281367e0 100644
--- a/overlays/pkgSets.nix
+++ b/overlays/pkgSets.nix
@@ -45,7 +45,7 @@ self: super: {
     inherit (self.pythonPackages) yapf jsbeautifier;
     inherit (self)
       go gdb mpc_cli ncmpcpp shfmt htmlTidy astyle nodejs tasksh magic-wormhole
-      nixfmt nixpkgs-fmt rnix-lsp tmate rustup kitty nix-top ghcWithPackages ghcid matrix-commander;
+      nixfmt nixpkgs-fmt rnix-lsp tmate rustup kitty nix-top ghcWithPackages ghcid matrix-commander upterm;
     obelisk = (import self.sources.obelisk { }).command;
   };
   accounting-pkgs = {