diff --git a/.travis.yml b/.travis.yml
index 40afeee..365eb67 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -63,6 +63,7 @@
   - tar -xf /tmp/wkhtmltox.tar.xz -C /tmp
   - sudo mv /tmp/wkhtmltox/bin/wkhtmltopdf /usr/local/bin/wkhtmltopdf
   - sudo chmod o+x /usr/local/bin/wkhtmltopdf
+  - sudo apt-get install libcups2-dev
 
   - cd ~/frappe-bench
 
diff --git a/requirements.txt b/requirements.txt
index 28ba9f6..c277545 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,10 +1,10 @@
+braintree==3.57.1
 frappe
-unidecode
-pygithub
-googlemaps
-python-stdnum
-braintree
-gocardless_pro
-woocommerce
-pandas
-plaid-python
\ No newline at end of file
+gocardless-pro==1.11.0
+googlemaps==3.1.1
+pandas==0.24.2
+plaid-python==3.4.0
+PyGithub==1.44.1
+python-stdnum==1.12
+Unidecode==1.1.1
+WooCommerce==2.1.1