diff --git a/tools/install.sh b/tools/install.sh
index b815a9c81..0cc020053 100755
--- a/tools/install.sh
+++ b/tools/install.sh
@@ -108,7 +108,7 @@ main() {
   echo 'p.p.s. Get stickers and t-shirts at https://shop.planetargon.com.'
   echo ''
   printf "${NORMAL}"
-  env zsh
+  env zsh -l
 }
 
 main