diff --git a/travis/analyze.sh b/travis/analyze.sh
index c5ed9de81c75d13f4654411166ca5bc98f38b1bc..6209e8dbf84fb99281cc902362ace0fb32555094 100755
--- a/travis/analyze.sh
+++ b/travis/analyze.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 echo "Analyzing dart:ui library..."
 RESULTS=`dartanalyzer                                                          \
   --options flutter/analysis_options.yaml                                      \
diff --git a/travis/licenses.sh b/travis/licenses.sh
index cdcd983f384194984f8638aebe05de4ce6d3f11e..adc74b5c553bd6817066cdd0cbc27aaacca82d08 100755
--- a/travis/licenses.sh
+++ b/travis/licenses.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 set -e
 shopt -s nullglob