diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 4eee9e1eccd1..7085ba5aab92 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -554,6 +554,7 @@ let
     "KappaGUI"
     "likeLTD"
     "logmult"
+    "loon"
     "LS2Wstat"
     "MareyMap"
     "memgene"