diff --git a/master/runexpress.go b/master/runexpress.go
index 9de84b0..f5fac71 100644
--- a/master/runexpress.go
+++ b/master/runexpress.go
@@ -69,7 +69,7 @@ func runExpress(changes <-chan FileChange) {
 	runBuild := func() bool {
 		log.Printf("[build] Starting ncc build...")
 
-		cmd := exec.Command("sh", "-c", "cd ../express && ../cmd pnpm ncc build ./app.ts")
+		cmd := exec.Command("../express/build.sh")
 
 		stdout, _ := cmd.StdoutPipe()
 		stderr, _ := cmd.StderrPipe()