diff --git a/.travis.yml b/.travis.yml
index 58cd6a5..09ed090 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,6 @@ php:
   - 5.5
   - 5.6
   - 7.0
-  - hhvm
 
 before_script:
   - travis_retry composer self-update
diff --git a/src/Parts/PhpSpec/Part.php b/src/Parts/PhpSpec/Part.php
index 8ecfc61..ed92c55 100644
--- a/src/Parts/PhpSpec/Part.php
+++ b/src/Parts/PhpSpec/Part.php
@@ -10,7 +10,7 @@ class Part extends AbstractPart
     public function setupPackage($composer, Directory $target)
     {
         if ($this->input->confirm('Do you want to set up PhpSpec as a testing tool?')) {
-            $composer->{'require-dev'}['phpspec/phpspec'] = '~2.0';
+            $composer->{'require-dev'}['phpspec/phpspec'] = '^4.0';
 
             $psr4Autoloading = (array) $composer->autoload->{'psr-4'};
             $namespace = key($psr4Autoloading).'Tests';
diff --git a/src/Parts/PhpUnit/Part.php b/src/Parts/PhpUnit/Part.php
index ab356a4..ab5185c 100644
--- a/src/Parts/PhpUnit/Part.php
+++ b/src/Parts/PhpUnit/Part.php
@@ -10,7 +10,7 @@ class Part extends AbstractPart
     public function setupPackage($composer, Directory $target)
     {
         if ($this->input->confirm('Do you want to set up PhpUnit as a testing tool?')) {
-            $composer->{'require-dev'}['phpunit/phpunit'] = '4.*';
+            $composer->{'require-dev'}['phpunit/phpunit'] = '^6.3';
 
             // Add autoloading rules for tests
             $psr4Autoloading = (array) $composer->autoload->{'psr-4'};