diff --git a/Gemfile b/Gemfile
index c31b7e5..5480c18 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,7 +22,7 @@ end
 group :development, :unit_tests do
   gem 'json',                                             '>= 2.0.2'
   gem 'metadata-json-lint',                               '~> 2.3'
-  gem 'puppetlabs_spec_helper',                           '~> 2.3'
+  gem 'puppetlabs_spec_helper',                           '~> 2.15'
   gem 'rspec-puppet',                                     '~> 2.6'
   gem 'rubocop',                                          '~> 0.79'
   gem 'tty-command',                                      '~> 0.6'
diff --git a/Gemfile.lock b/Gemfile.lock
index fadc518..4e0673e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -35,7 +35,7 @@ GEM
       json-schema (~> 2.8)
       spdx-licenses (~> 1.0)
     minitar (0.9)
-    mocha (1.11.1)
+    mocha (1.11.2)
     multi_json (1.14.1)
     multipart-post (2.1.1)
     necromancer (0.5.1)
@@ -82,7 +82,8 @@ GEM
       puppet-lint (>= 2.1, < 3.0)
     puppet-lint-variable_contains_upcase (1.2.0)
       puppet-lint (>= 1.0, < 3.0)
-    puppet-syntax (2.6.0)
+    puppet-syntax (3.0.1)
+      puppet (>= 5)
       rake
     puppet_forge (2.3.4)
       faraday (>= 0.9.0, < 0.18.0, != 0.13.1)
@@ -90,11 +91,11 @@ GEM
       gettext-setup (~> 0.11)
       minitar
       semantic_puppet (~> 1.0)
-    puppetlabs_spec_helper (2.14.1)
+    puppetlabs_spec_helper (2.15.0)
       mocha (~> 1.0)
       pathspec (~> 0.2.1)
       puppet-lint (~> 2.0)
-      puppet-syntax (~> 2.0)
+      puppet-syntax (>= 2.0, < 4)
       rspec-puppet (~> 2.0)
     r10k (3.5.1)
       colored2 (= 3.1.2)
@@ -111,17 +112,17 @@ GEM
       rspec-core (~> 3.9.0)
       rspec-expectations (~> 3.9.0)
       rspec-mocks (~> 3.9.0)
-    rspec-core (3.9.0)
-      rspec-support (~> 3.9.0)
-    rspec-expectations (3.9.0)
+    rspec-core (3.9.2)
+      rspec-support (~> 3.9.3)
+    rspec-expectations (3.9.2)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
-    rspec-mocks (3.9.0)
+    rspec-mocks (3.9.1)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
     rspec-puppet (2.7.8)
       rspec
-    rspec-support (3.9.0)
+    rspec-support (3.9.3)
     rubocop (0.79.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
@@ -179,7 +180,7 @@ DEPENDENCIES
   puppet-lint-undef_in_function-check (~> 0.2)
   puppet-lint-unquoted_string-check (~> 2.0)
   puppet-lint-variable_contains_upcase (~> 1.2)
-  puppetlabs_spec_helper (~> 2.3)
+  puppetlabs_spec_helper (~> 2.15)
   r10k (~> 3.5)
   rspec-puppet (~> 2.6)
   rubocop (~> 0.79)