diff --git a/pkgs/system/populate-cache.nix b/pkgs/system/populate-cache.nix
index 1af98e8e122f..3df4d96039c8 100644
--- a/pkgs/system/populate-cache.nix
+++ b/pkgs/system/populate-cache.nix
@@ -56,6 +56,8 @@ let {
     nxml
     uml
     nix
+    ocaml
+    hevea
   ;};