diff --git a/README.Rmd b/README.Rmd
index fdcd0b2..d86b770 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -16,6 +16,7 @@ knitr::opts_chunk$set(
   fig.path = "fig/"
 )
 library(tidyverse)
+library(svglite)
 ```
 
 # COVID benchmarking
diff --git a/renv.lock b/renv.lock
index 2d6ef06..7132d72 100644
--- a/renv.lock
+++ b/renv.lock
@@ -597,6 +597,13 @@
       "Repository": "CRAN",
       "Hash": "0759e6b6c0957edb1311028a49a35e76"
     },
+    "svglite": {
+      "Package": "svglite",
+      "Version": "2.0.0",
+      "Source": "Repository",
+      "Repository": "RSPM",
+      "Hash": "8fb6188960bf0f90996ce52f9c2106ac"
+    },
     "sys": {
       "Package": "sys",
       "Version": "3.4",
@@ -604,6 +611,13 @@
       "Repository": "CRAN",
       "Hash": "b227d13e29222b4574486cfcbde077fa"
     },
+    "systemfonts": {
+      "Package": "systemfonts",
+      "Version": "1.0.3",
+      "Source": "Repository",
+      "Repository": "RSPM",
+      "Hash": "5be9fcf8ef6763e8cb13ab009e273a1d"
+    },
     "tibble": {
       "Package": "tibble",
       "Version": "3.1.6",