diff --git a/pkgs/sandbox-agent/default.nix b/pkgs/sandbox-agent/default.nix
index d13ea04..c58ac31 100644
--- a/pkgs/sandbox-agent/default.nix
+++ b/pkgs/sandbox-agent/default.nix
@@ -1,6 +1,8 @@
 {
   lib,
   fetchFromGitHub,
+  openssl,
+  pkg-config,
   rustPlatform,
 }:
 rustPlatform.buildRustPackage {
@@ -20,6 +22,10 @@ rustPlatform.buildRustPackage {
     cp ${./Cargo.lock} Cargo.lock
   '';
 
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ openssl ];
+
   cargoBuildFlags = [
     "-p"
     "sandbox-agent"