diff --git a/shell.nix b/shell.nix
index 13e9c9f..40b65b2 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,10 +1,4 @@
-{ pkgs ? import <nixpkgs> {} }:
+{ pkgs ? import <nixpkgs> { } }:
 pkgs.mkShell {
-  nativeBuildInputs = with pkgs; [
-    opam
-    pkg-config
-    gmp
-    openssl
-    libev
-  ];
+  nativeBuildInputs = with pkgs; [ pkg-config gmp libffi libev sqlite openssl ];
 }