diff --git a/.fixtures.yml b/.fixtures.yml
index 7319fa3..eff6b95 100644
--- a/.fixtures.yml
+++ b/.fixtures.yml
@@ -1,10 +1,10 @@
 fixtures:
   forge_modules:
     stdlib:
       repo: 'puppetlabs/stdlib'
-      ref: '4.12.0'
+      ref: '4.17.0'
     concat:
       repo: 'puppetlabs/concat'
-      ref: '2.1.0'
+      ref: '4.0.0'
   symlinks:
     debnet: "#{source_dir}"
diff --git a/.travis.yml b/.travis.yml
index a72bb6b..aec2156 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,18 +1,20 @@
 ---
 language: ruby
 bundler_args: --without system_tests
 script: "bundle exec rake release_checks"
 matrix:
   allow_failures:
   fast_finish: true
 rvm:
-  - 2.1.9
-  - 2.2.5
-  - 2.3.1
+  - 2.2.7
+  - 2.3.4
+  - 2.4.1
 gemfile:
   - .gemfile
 env:
-  - PUPPET_VERSION="~> 3.5" STRICT_VARIABLES="yes"
-  - PUPPET_VERSION="~> 4.5" STRICT_VARIABLES="yes"
+  - PUPPET_VERSION="~> 3.8" STRICT_VARIABLES="yes"
+  - PUPPET_VERSION="~> 4.8" STRICT_VARIABLES="yes"
+  - PUPPET_VERSION="~> 4.9" STRICT_VARIABLES="yes"
+  - PUPPET_VERSION="~> 4.10" STRICT_VARIABLES="yes"
 notifications:
   email: false