diff --git a/config/puppet-versions.json b/config/puppet-versions.json
index c5271fc1..4ed39b4b 100644
--- a/config/puppet-versions.json
+++ b/config/puppet-versions.json
@@ -1,12 +1,4 @@
 [
-  {
-    "minimum_version": "3.0.0",
-    "maximum_version": "3.99.99",
-    "additional_gems": [
-      { "name": "safe_yaml", "version": "~> 1.0.4" },
-      { "name": "puppetdb-terminus", "version": "3.2.4" }
-    ]
-  },
   {
     "minimum_version": "4.0.0",
     "maximum_version": "4.99.99",
diff --git a/octocatalog-diff.gemspec b/octocatalog-diff.gemspec
index cc3d30f5..eccebced 100644
--- a/octocatalog-diff.gemspec
+++ b/octocatalog-diff.gemspec
@@ -30,20 +30,8 @@ EOF
   s.add_runtime_dependency 'hashdiff', '>= 0.3.0'
   s.add_runtime_dependency 'parallel', '>= 1.12.0'
   s.add_runtime_dependency 'rugged', '>= 0.25.0b2'
-  if puppet_version == '4.10.10'
-    s.add_runtime_dependency 'puppet', '4.10.10'
-    s.add_development_dependency 'puppet', '4.10.10'
-  elsif puppet_version == '5.5.22'
-    s.add_runtime_dependency 'puppet', '5.5.22'
-    s.add_development_dependency 'puppet', '5.5.22'
-  elsif puppet_version == '6.18.0'
-    s.add_runtime_dependency 'puppet', '6.18.0'
-    s.add_development_dependency 'puppet', '6.18.0'
-  elsif puppet_version == '7.3.0'
-    s.add_runtime_dependency 'puppet', '7.3.0'
-    s.add_development_dependency 'puppet', '7.3.0'
-  end
-
+  s.add_runtime_dependency 'puppet', puppet_version
+  s.add_development_dependency 'puppet', puppet_version
   s.add_development_dependency 'rspec', '~> 3.4.0'
   s.add_development_dependency 'rake', '12.3.3'
   s.add_development_dependency 'parallel_tests', '2.7.1'