diff --git a/.travis.yml b/.travis.yml
index f35dbd0..0b42a5e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,11 @@ language: ruby
 rvm:
   - 2.4.0
 
+addons:
+  apt:
+    packages:
+    - libcurl4-openssl-dev
+
 branches:
   only:
     - gh-pages