diff --git a/.travis.yml b/.travis.yml
index c84de6db13f..5827231db19 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,7 +19,6 @@ services:
 before_install:
  - ./unit-tests/ci/install_prereqs.sh
  - ./unit-tests/ci/setup_dbs.sh
- - sudo apt-get -qq update
  - sudo apt-get -qq install valgrind
 
 before_script:
diff --git a/unit-tests/ci/install_prereqs.sh b/unit-tests/ci/install_prereqs.sh
index bdb8345661c..3897fcdbaa7 100755
--- a/unit-tests/ci/install_prereqs.sh
+++ b/unit-tests/ci/install_prereqs.sh
@@ -2,6 +2,8 @@
 
 DIR=$(readlink -enq $(dirname $0))
 
+sudo apt-get -qq update &
+
 if [ "$(php -r 'echo substr(PHP_VERSION, 0, 3);')" = "5.5" ]; then
 	( pecl install apcu < /dev/null || ( pecl config-set preferred_state beta; pecl install apcu < /dev/null ) && phpenv config-add "$DIR/apcu.ini" ) &
 else
@@ -13,5 +15,6 @@ CFLAGS="-O1 -g3 -fno-strict-aliasing" pecl install imagick < /dev/null &
 # CFLAGS="-O2 -g3 -fno-strict-aliasing" pecl upgrade mongo < /dev/null &
 
 phpenv config-add "$DIR/memcache.ini"
+phpenv config-add "$DIR/memcached.ini"
 phpenv config-rm xdebug.ini
 wait
diff --git a/unit-tests/ci/memcached.ini b/unit-tests/ci/memcached.ini
new file mode 100644
index 00000000000..7d09664ee5a
--- /dev/null
+++ b/unit-tests/ci/memcached.ini
@@ -0,0 +1 @@
+extension=memcached.so