diff --git a/tasks/e2e.sh b/tasks/e2e.sh
index 8189847f7f7..a1566a85bdb 100755
--- a/tasks/e2e.sh
+++ b/tasks/e2e.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 # Copyright (c) 2015-present, Facebook, Inc.
 # All rights reserved.
 #
diff --git a/tasks/release.sh b/tasks/release.sh
index b30ab86abd5..c52d7c40bef 100755
--- a/tasks/release.sh
+++ b/tasks/release.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 # Copyright (c) 2015-present, Facebook, Inc.
 # All rights reserved.
 #