diff --git a/.travis.yml b/.travis.yml
index c90c983..d4db537 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,15 @@
 language: bash
 os: osx
-osx_image: xcode7.3
+osx_image: xcode9.4
 
-install:
-  - ./.travis/install.sh
+addons:
+  homebrew:
+    packages:
+      - php@5.6
+      - php@7.1
+      - php@7.2
+      - php@7.3
+    update: true
 
 script:
   - ./.travis/clean.sh
diff --git a/.travis/clean.sh b/.travis/clean.sh
index a0d9837..6f0a4eb 100755
--- a/.travis/clean.sh
+++ b/.travis/clean.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
 
-for version in '5.6' '7.0' '7.1' '7.2'; do
+for version in '5.6' '7.1' '7.2' '7.3'; do
     brew unlink php@$version
 done
diff --git a/.travis/install.sh b/.travis/install.sh
deleted file mode 100755
index a8c7307..0000000
--- a/.travis/install.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/bash
-
-if [[ $TRAVIS_OS_NAME == 'osx' ]]; then
-    brew tap homebrew/dupes
-    brew update
-    brew install php@5.6
-    brew unlink php@5.6
-    brew install php@7.0
-    brew unlink php@7.0
-    brew install php@7.1
-    brew unlink php@7.1
-    brew install php@7.2
-    brew unlink php@7.2
-    brew install php@7.3
-    brew link --overwrite php@7.3
-    brew unlink php@7.3
-
-    echo 'Installed all PHP versions.'
-fi
diff --git a/.travis/test.sh b/.travis/test.sh
index 3214603..839f295 100755
--- a/.travis/test.sh
+++ b/.travis/test.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 error=0
-for version in '5.6' '7.0' '7.1' '7.2' '7.3'; do
+for version in '5.6' '7.1' '7.2' '7.3'; do
     . `echo $(dirname $0)"/../phpswitch.sh"` $version -s > /dev/null
     switched=$(php -v | grep -e '^PHP' | cut -d' ' -f2 | cut -d. -f1,2)
     if [ "$version" != "$switched" ]; then