diff --git a/action/entrypoint.sh b/action/entrypoint.sh
index 5975f465..13694c26 100644
--- a/action/entrypoint.sh
+++ b/action/entrypoint.sh
@@ -1,3 +1,3 @@
-#!/bin/sh
+#!/bin/bash
 
-sh -c "cd /home/app/pandoc && make pdf"
+bash -c "cd /home/app/pandoc && make pdf"