diff --git a/flake.nix b/flake.nix
index c14d209..bf2edee 100644
--- a/flake.nix
+++ b/flake.nix
@@ -71,6 +71,10 @@
             duneVersion = "3";
             src = sources.ocaml;
 
+            buildInputs = [
+                # Ocaml package dependencies needed to build go here.
+            ];
+
             strictDeps = true;
 
             preBuild = ''