diff --git a/garlic/pp/rplot.nix b/garlic/pp/rplot.nix
index 17d7d54..f061a28 100644
--- a/garlic/pp/rplot.nix
+++ b/garlic/pp/rplot.nix
@@ -15,7 +15,7 @@ with stdenv.lib;
 
 let
   customR = rWrapper.override {
-    packages = with rPackages; [ tidyverse ] ++ extraRPackages;
+    packages = with rPackages; [ tidyverse viridis ] ++ extraRPackages;
   };
 
 in stdenv.mkDerivation {