diff --git a/tasks/e2e.sh b/tasks/e2e.sh
index 8189847f7f79cc76bc4bf965a88029a278eee545..a1566a85bdb903c8878ac9a0c04b43118dc36164 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 b30ab86abd57a4ecf2afd7b123982b1741ac429a..c52d7c40bef482bab50c1fb613d09c8394e6fa06 100755
--- a/tasks/release.sh
+++ b/tasks/release.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 # Copyright (c) 2015-present, Facebook, Inc.
 # All rights reserved.
 #