diff --git a/pkgs/by-name/co/codex/package.nix b/pkgs/by-name/co/codex/package.nix
index 4fe1a05cf5c2..c9e4a59a0ca3 100644
--- a/pkgs/by-name/co/codex/package.nix
+++ b/pkgs/by-name/co/codex/package.nix
@@ -27,6 +27,9 @@ rustPlatform.buildRustPackage (finalAttrs: {
     pkg-config
     openssl
   ];
+  buildInputs = [
+    openssl.dev
+  ];
 
   checkFlags = [
     "--skip=keeps_previous_response_id_between_tasks" # Requires network access