diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 5c05973095fd..f168e115de13 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -288,7 +288,7 @@ let
     pbdNCDF4 = [ pkgs.netcdf ];
     pbdPROF = [ pkgs.openmpi ];
     PKI = [ pkgs.openssl ];
-    png = [ pkgs.libpng ];
+    png = [ pkgs.libpng.dev ];
     PopGenome = [ pkgs.zlib ];
     proj4 = [ pkgs.proj ];
     qtbase = [ pkgs.qt4 ];