diff --git a/dev.sh b/dev.sh
index d655032..3e452b5 100755
--- a/dev.sh
+++ b/dev.sh
@@ -1,3 +1,4 @@
+cd -- "$( dirname -- "${BASH_SOURCE[0]}" )"
 tmux new-session -d -s letterbox-dev
 tmux rename-window web
 tmux send-keys "cd web; trunk serve --release --address 0.0.0.0 --port 6758 --proxy-backend http://localhost:9345/ --proxy-rewrite=/api/ -w ../shared -w ../notmuch -w ./" C-m