diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 48d6c19f269a..a891dbd3c51a 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -328,6 +328,7 @@ let
     chebpol = [ pkgs.fftw.dev ];
     ChemmineOB = with pkgs; [ openbabel pkg-config ];
     curl = [ pkgs.curl.dev ];
+    CytoML = [ pkgs.libxml2.dev ];
     data_table = with pkgs; [ pkg-config zlib.dev ] ++ lib.optional stdenv.isDarwin pkgs.llvmPackages.openmp;
     devEMF = with pkgs; [ xorg.libXft.dev ];
     diversitree = with pkgs; [ gsl fftw ];