diff --git a/install.sh b/install.sh
index 337620b..7b95153 100755
--- a/install.sh
+++ b/install.sh
@@ -11,3 +11,6 @@ npm install uglify-js -g
 # Install the clean-css minifier
 # https://github.com/clean-css/clean-css-cli
 npm install clean-css-cli -g
+
+# Required to optimize jpg/png/svg
+npm install imageoptim-cli -g