diff --git a/.rubocop.yml b/.rubocop.yml
index 47b1aadbe6..439ea84ee8 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -5,7 +5,7 @@ require:
 AllCops:
   NewCops: enable
   DisplayCopNames: true
-  TargetRubyVersion: 3.1
+  TargetRubyVersion: '2.6'
   Include:
   - "**/*.rb"
   Exclude:
diff --git a/lib/puppet/functions/postgresql/postgresql_password.rb b/lib/puppet/functions/postgresql/postgresql_password.rb
index f34d412779..9ca4d81dbb 100644
--- a/lib/puppet/functions/postgresql/postgresql_password.rb
+++ b/lib/puppet/functions/postgresql/postgresql_password.rb
@@ -66,7 +66,7 @@ def pg_sha256(password, salt)
   def digest_key(password, salt)
     OpenSSL::KDF.pbkdf2_hmac(
       password,
-      salt:,
+      salt: salt,
       iterations: 4096,
       length: 32,
       hash: OpenSSL::Digest.new('SHA256'),
diff --git a/lib/puppet/provider/postgresql_conf/ruby.rb b/lib/puppet/provider/postgresql_conf/ruby.rb
index 59ba15d2a5..a5430e821a 100644
--- a/lib/puppet/provider/postgresql_conf/ruby.rb
+++ b/lib/puppet/provider/postgresql_conf/ruby.rb
@@ -29,7 +29,7 @@ def parse_config
                 else
                   matches[:value].delete("'")
                 end
-        attributes_hash = { line_number:, key: matches[:key], ensure: 'present', value:, comment: matches[:comment] }
+        attributes_hash = { line_number: line_number, key: matches[:key], ensure: 'present', value: value, comment: matches[:comment] }
         active_settings.push(attributes_hash)
       end
     end
diff --git a/lib/puppet/provider/postgresql_replication_slot/ruby.rb b/lib/puppet/provider/postgresql_replication_slot/ruby.rb
index 257de341a3..31271cc51b 100644
--- a/lib/puppet/provider/postgresql_replication_slot/ruby.rb
+++ b/lib/puppet/provider/postgresql_replication_slot/ruby.rb
@@ -7,7 +7,7 @@
   def self.instances
     run_sql_command('SELECT * FROM pg_replication_slots;')[0].split("\n").select { |l| l.include?('|') }.map do |l|
       name, *_others = l.strip.split(%r{\s+\|\s+})
-      new(name:,
+      new(name: name,
           ensure: :present)
     end
   end
diff --git a/spec/defines/server/pg_hba_rule_spec.rb b/spec/defines/server/pg_hba_rule_spec.rb
index 302d2848e8..7d1187001c 100644
--- a/spec/defines/server/pg_hba_rule_spec.rb
+++ b/spec/defines/server/pg_hba_rule_spec.rb
@@ -25,7 +25,7 @@ class { 'postgresql::server': }
         user: 'all',
         address: '1.1.1.1/24',
         auth_method: 'md5',
-        target:
+        target: target
       }
     end
 
@@ -47,7 +47,7 @@ class { 'postgresql::server': }
         database: 'all',
         user: 'all',
         auth_method: 'ident',
-        target:
+        target: target
       }
     end
 
@@ -71,7 +71,7 @@ class { 'postgresql::server': }
         address: '0.0.0.0/0',
         auth_method: 'ldap',
         auth_option: 'foo=bar',
-        target:
+        target: target
       }
     end
 
@@ -98,7 +98,7 @@ class { 'postgresql::server': }
           user: 'all',
           address: '0.0.0.0/0',
           auth_method: 'peer',
-          target:
+          target: target
         }
       end
 
@@ -126,7 +126,7 @@ class { 'postgresql::server': }
           user: 'all',
           address: '0.0.0.0/0',
           auth_method: 'scram-sha-256',
-          target:
+          target: target
         }
       end
 
@@ -240,7 +240,7 @@ class { 'postgresql::server': }
           user: 'all',
           address: '.domain.tld',
           auth_method: 'md5',
-          target:
+          target: target
         }
       end
 
@@ -263,7 +263,7 @@ class { 'postgresql::server': }
           user: 'all',
           address: '/45',
           auth_method: 'md5',
-          target:
+          target: target
         }
       end
 
diff --git a/spec/unit/puppet/provider/postgresql_psql/ruby_spec.rb b/spec/unit/puppet/provider/postgresql_psql/ruby_spec.rb
index 5e3c705547..9f2c3b55e1 100644
--- a/spec/unit/puppet/provider/postgresql_psql/ruby_spec.rb
+++ b/spec/unit/puppet/provider/postgresql_psql/ruby_spec.rb
@@ -5,7 +5,7 @@
 describe Puppet::Type.type(:postgresql_psql).provider(:ruby) do
   let(:name) { 'rspec psql test' }
   let(:resource) do
-    Puppet::Type.type(:postgresql_psql).new({ name:, provider: :ruby }.merge(attributes))
+    Puppet::Type.type(:postgresql_psql).new({ name: name, provider: :ruby }.merge(attributes))
   end
   let(:provider) { resource.provider }
 
diff --git a/spec/unit/puppet/provider/postgresql_replication_slot/ruby_spec.rb b/spec/unit/puppet/provider/postgresql_replication_slot/ruby_spec.rb
index 676d783f18..032ceac752 100644
--- a/spec/unit/puppet/provider/postgresql_replication_slot/ruby_spec.rb
+++ b/spec/unit/puppet/provider/postgresql_replication_slot/ruby_spec.rb
@@ -20,7 +20,7 @@ def success?
 
   let(:name) { 'standby' }
   let(:resource) do
-    type.new({ name:, provider: :ruby }.merge(attributes))
+    type.new({ name: name, provider: :ruby }.merge(attributes))
   end
   let(:sql_instances) do
     "abc |        | physical  |        |          | t      |      |              | 0/3000420
diff --git a/spec/unit/puppet/type/postgresql_psql_spec.rb b/spec/unit/puppet/type/postgresql_psql_spec.rb
index ed8a3b1b4a..871645534d 100644
--- a/spec/unit/puppet/type/postgresql_psql_spec.rb
+++ b/spec/unit/puppet/type/postgresql_psql_spec.rb
@@ -132,7 +132,7 @@
     [true, :true].each do |refreshonly|
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly: }
+          { refreshonly: refreshonly }
         end
 
         context 'not refreshing'
@@ -141,7 +141,7 @@
 
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly: }
+          { refreshonly: refreshonly }
         end
 
         context 'refreshing'
@@ -152,7 +152,7 @@
     [false, :false].each do |refreshonly|
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly: }
+          { refreshonly: refreshonly }
         end
 
         context 'not refreshing'
@@ -161,7 +161,7 @@
 
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly: }
+          { refreshonly: refreshonly }
         end
 
         context 'refreshing'
@@ -176,7 +176,7 @@
     [true, :true].each do |refreshonly|
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly:, unless: 'SELECT something' }
+          { refreshonly: refreshonly, unless: 'SELECT something' }
         end
 
         context 'not refreshing'
@@ -185,7 +185,7 @@
 
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly:, unless: 'SELECT something' }
+          { refreshonly: refreshonly, unless: 'SELECT something' }
         end
 
         context 'refreshing'
@@ -196,7 +196,7 @@
     [false, :false].each do |refreshonly|
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly:, unless: 'SELECT something' }
+          { refreshonly: refreshonly, unless: 'SELECT something' }
         end
 
         context 'not refreshing'
@@ -205,7 +205,7 @@
 
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly:, unless: 'SELECT something' }
+          { refreshonly: refreshonly, unless: 'SELECT something' }
         end
 
         context 'refreshing'
@@ -220,7 +220,7 @@
     [true, :true].each do |refreshonly|
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly:, unless: 'SELECT something' }
+          { refreshonly: refreshonly, unless: 'SELECT something' }
         end
 
         context 'not refreshing'
@@ -229,7 +229,7 @@
 
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly:, unless: 'SELECT something' }
+          { refreshonly: refreshonly, unless: 'SELECT something' }
         end
 
         context 'refreshing'
@@ -240,7 +240,7 @@
     [false, :false].each do |refreshonly|
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly:, unless: 'SELECT something' }
+          { refreshonly: refreshonly, unless: 'SELECT something' }
         end
 
         context 'not refreshing'
@@ -249,7 +249,7 @@
 
       context "refreshonly => #{refreshonly.inspect}" do
         let(:attributes) do
-          { refreshonly:, unless: 'SELECT something' }
+          { refreshonly: refreshonly, unless: 'SELECT something' }
         end
 
         context 'refreshing'