diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 4c8935d9222..a9bb3487813 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -451,6 +451,7 @@ let
     quadprog = [ pkgs.libiconv ];
     randomForest = [ pkgs.libiconv ];
     sundialr = [ pkgs.libiconv ];
+    ucminf = [ pkgs.libiconv ];
   };
 
   packagesRequireingX = [