diff --git a/.fixtures.puppet4.yml b/.fixtures.puppet4.yml
new file mode 100644
index 0000000..24ba512
--- /dev/null
+++ b/.fixtures.puppet4.yml
@@ -0,0 +1,17 @@
+fixtures:
+  forge_modules:
+    stdlib:
+      repo: puppetlabs/stdlib
+      ref: 5.2.0
+    concat:
+      repo: puppetlabs/concat
+      ref: 5.3.0
+    vcsrepo:
+      repo: puppetlabs/vcsrepo
+      ref: 2.4.0
+    apt:
+      repo: puppetlabs/apt
+      ref: 6.3.0
+    zypprepo: puppet/zypprepo
+  symlinks:
+    icingaweb2: "#{source_dir}"
diff --git a/.travis.yml b/.travis.yml
index d9faaeb..0264bf9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,36 +1,36 @@
 sudo: false
 language: ruby
 cache: bundler
 bundler_args: "--without system_tests"
 before_install:
 - sh ./.travis/setup.sh
 script:
 - bundle exec rake $CHECK
 matrix:
   fast_finish: true
   include:
   - rvm: '2.4'
     env: PUPPET_VERSION="~> 5.0" CHECK=build DEPLOY_TO_FORGE=yes
   - rvm: '2.1'
-    env: PUPPET_VERSION="~> 4.0" CHECK=test
+    env: PUPPET_VERSION="~> 4.0" CHECK=test FIXTURES_YML=.fixtures.puppet4.yml
   - rvm: '2.4'
     env: PUPPET_VERSION="~> 5.0" CHECK=test
   - rvm: '2.5'
     env: PUPPET_VERSION="~> 6.0" CHECK=test
 branches:
   only:
   - master
   - "/^v\\d/"
 notifications:
   email: false
 deploy:
   provider: puppetforge
   deploy:
     branch: master
   user: icinga
   password:
     secure: "hcGcjXH8v7mjP8bAVeJY/aUzciEjzzjhBsB3b8SKFytpH6R5kcNLVXzkAtTXgJi8nR4PVFSjKovku3o0Q7BzWnmsGaQ69UzJ5gz37oO2mxfNvVCm7FyiCCW86gp+IvpsMDRa+gqpswvb0CjzwK5SC+R7/+pzt60aPx2Gk/yteuU="
   on:
     tags: true
     all_branches: true
     condition: "$DEPLOY_TO_FORGE = yes"
diff --git a/metadata.json b/metadata.json
index 46913e3..d46dca3 100644
--- a/metadata.json
+++ b/metadata.json
@@ -1,60 +1,60 @@
 {
   "name": "icinga-icingaweb2",
   "version": "2.3.0",
   "author": "Icinga Development Team",
   "summary": "Icinga Web 2 Puppet Module",
   "license": "Apache-2.0",
   "source": "https://github.com/Icinga/puppet-icingaweb2.git",
   "project_page": "https://github.com/Icinga/puppet-icingaweb2",
   "issues_url": "https://github.com/Icinga/puppet-icingaweb2/issues",
   "requirements": [
     { "name": "puppet", "version_requirement": ">= 4.7.0 < 7.0.0" }
   ],
   "dependencies": [
-    { "name": "puppetlabs/stdlib",  "version_requirement": ">= 4.16.0 < 6.0.0" },
-    { "name": "puppetlabs/concat",  "version_requirement": ">= 2.0.1 < 6.0.0" },
-    { "name": "puppetlabs/vcsrepo", "version_requirement": ">= 1.3.0 < 3.0.0" }
+    { "name": "puppetlabs/stdlib",  "version_requirement": ">= 4.16.0 < 7.0.0" },
+    { "name": "puppetlabs/concat",  "version_requirement": ">= 2.0.1 < 7.0.0" },
+    { "name": "puppetlabs/vcsrepo", "version_requirement": ">= 1.3.0 < 4.0.0" }
   ],
   "tags": [
     "icinga",
     "icinga2",
     "icingaweb2",
     "monitoring"
   ],
   "operatingsystem_support": [
     {
       "operatingsystem": "Debian",
       "operatingsystemrelease": [
         "8",
         "9"
       ]
     },
     {
       "operatingsystem": "RedHat",
       "operatingsystemrelease": [
         "6",
         "7"
       ]
     },
     {
       "operatingsystem": "CentOS",
       "operatingsystemrelease": [
         "6",
         "7"
       ]
     },
     {
       "operatingsystem": "Ubuntu",
       "operatingsystemrelease": [
         "16.04",
         "18.04"
       ]
     },
     {
       "operatingsystem": "SLES",
       "operatingsystemrelease": [
         "12"
       ]
     }
   ]
 }