diff --git a/.travis.yml b/.travis.yml
index 8faf8bf..ddc3101 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,6 @@
 language: php
 dist: trusty
 php:
-  - '5.5'
   - '5.6'
   - '7.0'
   - '7.1'