diff --git a/shell.nix b/shell.nix
index 56c703b..627559f 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,5 +1,10 @@
 { pkgs ? import <nixpkgs> {} }:
 
 pkgs.mkShell {
-  buildInputs = [ pkgs.websocat ];
+  buildInputs = [
+    pkgs.cargo
+    pkgs.openssl
+    pkgs.pkg-config
+    pkgs.websocat
+  ];
 }