diff --git a/.travis.yml b/.travis.yml
index becf280a3a2b3279556af3baf9ce571d105bb1bc..bc5ccd804667b8a3ea56d8b160d16fe3702e8043 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,7 +14,7 @@ php:
 env:
   global:
     - COMPOSER_BIN_DIR=~/bin
-    - INTEGRATION_SETS=2
+    - INTEGRATION_SETS=3
   matrix:
     - TEST_SUITE=unit
     - TEST_SUITE=integration INTEGRATION_INDEX=1