diff --git a/build.sh b/build.sh
index 324327e..e479cbd 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/bin/bash
 
 set -e
 
diff --git a/requirements.txt b/requirements.txt
index 90136ac..7845d42 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
-coverage==3.7.1
-flake8==2.4.1
-lxml==3.4.4
-pep8==1.5.7
-requests==2.7.0
+coverage>=3.7.1
+flake8>=2.4.1
+lxml>=3.4.4
+pep8>=1.5.7
+python-printr>=0.0.0
+requests>=2.7.0