diff --git a/lib/system-nixpkgs-map.nix b/lib/system-nixpkgs-map.nix
index 95e8fa2a..c819f2d6 100644
--- a/lib/system-nixpkgs-map.nix
+++ b/lib/system-nixpkgs-map.nix
@@ -129,6 +129,7 @@ in
      msvcrt = null; # this is the libc
      Crypt32 = null;
      mswsock = null;
+     bcrypt = null;
    }
 # -- os x
 # NB: these map almost 1:1 to the framework names