diff --git a/.travis.yml b/.travis.yml
index 9692a2e..b7a0bca 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,28 +1,53 @@
 language: php
 
-php:
-  - 5.6
-  - 7.0
-  - 7.1
-
-env:
-  - ILLUMINATE_VERSION=5.1.*
+cache:
+  directories:
+    - $HOME/.composer/cache
 
 matrix:
   include:
-    - php: 7.1
+    - php: 5.6
+      env: ILLUMINATE_VERSION=5.1.*
+    - php: 5.6
+      env: ILLUMINATE_VERSION=5.2.*
+    - php: 5.6
+      env: ILLUMINATE_VERSION=5.3.*
+    - php: 5.6
       env: ILLUMINATE_VERSION=5.4.*
-    - php: 7.1
+    - php: 7.0
+      env: ILLUMINATE_VERSION=5.1.*
+    - php: 7.0
+      env: ILLUMINATE_VERSION=5.2.*
+    - php: 7.0
       env: ILLUMINATE_VERSION=5.3.*
     - php: 7.0
       env: ILLUMINATE_VERSION=5.4.*
     - php: 7.0
+      env: ILLUMINATE_VERSION=5.5.*
+    - php: 7.1
+      env: ILLUMINATE_VERSION=5.1.*
+    - php: 7.1
+      env: ILLUMINATE_VERSION=5.2.*
+    - php: 7.1
       env: ILLUMINATE_VERSION=5.3.*
-    - php: 5.6
+    - php: 7.1
       env: ILLUMINATE_VERSION=5.4.*
-    - php: 5.6
+    - php: 7.1
+      env: ILLUMINATE_VERSION=5.5.*
+    - php: 7.1
+      env: ILLUMINATE_VERSION=5.6.*
+    - php: 7.2
+      env: ILLUMINATE_VERSION=5.1.*
+    - php: 7.2
+      env: ILLUMINATE_VERSION=5.2.*
+    - php: 7.2
       env: ILLUMINATE_VERSION=5.3.*
-
+    - php: 7.2
+      env: ILLUMINATE_VERSION=5.4.*
+    - php: 7.2
+      env: ILLUMINATE_VERSION=5.5.*
+    - php: 7.2
+      env: ILLUMINATE_VERSION=5.6.*
 
 before_install:
     - openssl aes-256-cbc -K $encrypted_5affb966e7f5_key -iv $encrypted_5affb966e7f5_iv -in tests/fixtures/service-account.json.enc -out tests/fixtures/service-account.json -d
@@ -32,6 +57,9 @@ before_install:
     - if [ "$ILLUMINATE_VERSION" == "5.1.*" ]; then composer require  "orchestra/testbench:^3.1" --dev --no-update -v; fi
     - if [ "$ILLUMINATE_VERSION" == "5.2.*" ]; then composer require  "orchestra/testbench:^3.2" --dev --no-update -v; fi
     - if [ "$ILLUMINATE_VERSION" == "5.3.*" ]; then composer require  "orchestra/testbench:^3.2" --dev --no-update -v; fi
+    - if [ "$ILLUMINATE_VERSION" == "5.4.*" ]; then composer require  "orchestra/testbench:^3.4" --dev --no-update -v; fi
+    - if [ "$ILLUMINATE_VERSION" == "5.5.*" ]; then composer require  "orchestra/testbench:^3.5" --dev --no-update -v; fi
+    - if [ "$ILLUMINATE_VERSION" == "5.6.*" ]; then composer require  "orchestra/testbench:^3.6" --dev --no-update -v; fi
 
 install:
   - travis_retry composer self-update