diff --git a/.travis.yml b/.travis.yml
index c2b8634afe..3fbee32e4b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -27,7 +27,7 @@ before_install:
   fi
 before_script:
 - |
-  # Remove Xdebug for a huge performance increase, but not from nightly or hhvm:
+  # Remove Xdebug for a huge performance increase, but not from nightly:
   stable='^[0-9\.]+$'
   if [[ "$TRAVIS_PHP_VERSION" =~ $stable ]]; then
     phpenv config-rm xdebug.ini
@@ -42,7 +42,7 @@ before_script:
   # Install the specified version of PHPUnit depending on the PHP version:
   if [[ "$WP_TRAVISCI" == "travis:phpunit" ]]; then
     case "$TRAVIS_PHP_VERSION" in
-      7.1|7.0|hhvm|nightly)
+      7.1|7.0|nightly)
         echo "Using PHPUnit 5.7"
         composer global require "phpunit/phpunit=5.7.*"
         ;;
@@ -67,11 +67,7 @@ before_script:
 - npm install
 - npm prune
 - php --version
-- |
-  # Debug PHP extensions, but not on HHVM because the command hangs indefinitely:
-  if [[ "$TRAVIS_PHP_VERSION" != 'hhvm' ]]; then
-    php -m
-  fi
+- php -m
 - npm --version
 - node --version
 - which phpunit