diff --git a/run.sh b/run.sh
index ea79b7b..cef69ae 100755
--- a/run.sh
+++ b/run.sh
@@ -1,4 +1,5 @@
 #!/bin/bash -e
+./scripts/add.sh '{"a": 20, "b": 21}' && echo && echo
 ./scripts/greet.sh Benjamin && echo && echo
 ./scripts/count-vowels.sh 'Once upon a dream' && echo && echo
 ./scripts/http-get.sh && echo && echo