diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 3b764de4b1e8..80faec70b36b 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -556,6 +556,7 @@ let
     RProtoBuf = [ pkgs.pkg-config ];
     Rpoppler = [ pkgs.pkg-config ];
     XML = [ pkgs.pkg-config ];
+    apsimx = [ pkgs.which ];
     cairoDevice = [ pkgs.pkg-config ];
     chebpol = [ pkgs.pkg-config ];
     fftw = [ pkgs.pkg-config ];