diff --git a/pkgs/xo-object.nix b/pkgs/xo-object.nix
index 7d65efe7..d4686bef 100644
--- a/pkgs/xo-object.nix
+++ b/pkgs/xo-object.nix
@@ -1,6 +1,6 @@
 {
   # nixpkgs dependencies
-  lib, stdenv, cmake, catch2,
+  lib, stdenv, cmake, catch2, libbsd,
 
   # xo dependencies
 #  xo-reflect,
@@ -30,7 +30,7 @@ stdenv.mkDerivation (finalattrs:
     inherit doCheck;
 
     nativeBuildInputs = [
-      cmake catch2
+      cmake catch2 libbsd
       xo-randomgen
       xo-cmake
     ];
diff --git a/pkgs/xo-ordinaltree.nix b/pkgs/xo-ordinaltree.nix
index b6045eea..9ede28ed 100644
--- a/pkgs/xo-ordinaltree.nix
+++ b/pkgs/xo-ordinaltree.nix
@@ -3,11 +3,10 @@
   stdenv, cmake, catch2,
 
   # xo dependencies
-  xo-cmake,
+  xo-allocutil,
   xo-refcnt,
   xo-randomgen,
-#  xo-reflect,
-    #, xo-indentlog,
+  xo-cmake,
 } :
 
 stdenv.mkDerivation (finalattrs:
@@ -23,6 +22,7 @@ stdenv.mkDerivation (finalattrs:
       cmake catch2 xo-cmake
     ];
     propagatedBuildInputs = [
+      xo-allocutil
       xo-refcnt
       xo-randomgen
     ];