diff --git a/.travis.yml b/.travis.yml
index b9779ac..60384bf 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,7 @@ install:
     - .travis/backend-install.sh
 before_script:
     - phpenv config-rm xdebug.ini
+    - phpenv config-add .travis/data/phpconfig.ini
     - mysql -e 'CREATE DATABASE pdnstest;'
     - .travis/backend-start-server.sh > server.log 2>&1 &
 script:
diff --git a/.travis/data/phpconfig.ini b/.travis/data/phpconfig.ini
new file mode 100644
index 0000000..66f54f5
--- /dev/null
+++ b/.travis/data/phpconfig.ini
@@ -0,0 +1 @@
+extension="apcu.so"
\ No newline at end of file