diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 181c788..9334843 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,7 +14,9 @@ jobs:
     strategy:
       matrix:
         ruby:
+          - '3.1.2' # using 3.1.2 instead of latest patch as 3.1.2 is the minimum specified in the gemspec
           - '3.2.2'
+          - '3.3.6'
 
     steps:
     - uses: actions/checkout@v4
diff --git a/.rubocop.yml b/.rubocop.yml
index d5538f2..0b0dde1 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -3,7 +3,7 @@ require:
   - rubocop-rspec
 
 AllCops:
-  TargetRubyVersion: 3.0.0
+  TargetRubyVersion: 3.1.2
   NewCops: enable
 
 Gemspec/DevelopmentDependencies:
@@ -38,6 +38,9 @@ RSpec/ExampleLength:
 Style/Documentation:
   Enabled: false
 
+Style/HashSyntax:
+  EnforcedShorthandSyntax: never
+
 RSpec/MultipleMemoizedHelpers:
   Enabled: false
 RSpec/MultipleExpectations:
diff --git a/code0-identities.gemspec b/code0-identities.gemspec
index 560fde5..8f9fb79 100644
--- a/code0-identities.gemspec
+++ b/code0-identities.gemspec
@@ -11,7 +11,7 @@ Gem::Specification.new do |spec|
   spec.summary = "Library to manage external identities"
   spec.homepage = "https://github.com/code0-tech/code0-identities"
   spec.license = "MIT"
-  spec.required_ruby_version = ">= 3.0.0"
+  spec.required_ruby_version = ">= 3.1.2"
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage