diff --git a/garlic/fig/dev/shell.nix b/garlic/fig/dev/shell.nix
index 29bb35c..840c83e 100644
--- a/garlic/fig/dev/shell.nix
+++ b/garlic/fig/dev/shell.nix
@@ -4,7 +4,7 @@ with pkgs;
 
 let
   rWrapper = pkgs.rWrapper.override {
-    packages = with pkgs.rPackages; [ tidyverse rjson jsonlite ];
+    packages = with pkgs.rPackages; [ tidyverse rjson jsonlite egg ];
   };
 in
 stdenv.mkDerivation {
diff --git a/garlic/pp/rplot.nix b/garlic/pp/rplot.nix
index f061a28..19b092d 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 viridis ] ++ extraRPackages;
+    packages = with rPackages; [ tidyverse viridis egg ] ++ extraRPackages;
   };
 
 in stdenv.mkDerivation {