diff --git a/Gemfile b/Gemfile
index dc811f0..f50e303 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,7 +13,7 @@ end
 
 # Needed for the CLI & library
 group :runtime, :all do
-  gem 'ctf-party', '~> 2.3' # string conversion
+  gem 'ctf-party', '~> 3.0' # string conversion
   gem 'twitter_cldr', '~> 6.12' # ICU / CLDR
   gem 'unicode-confusable', '~> 1.10' # confusable chars
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 266cd19..cd0b1bd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     unisec (0.0.3)
-      ctf-party (~> 2.3)
+      ctf-party (>= 2.3, < 4.0)
       dry-cli (~> 1.0)
       paint (~> 2.3)
       twitter_cldr (~> 6.11, >= 6.11.5)
@@ -17,8 +17,9 @@ GEM
     coderay (1.1.3)
     commonmarker (0.23.10)
     concurrent-ruby (1.2.2)
-    ctf-party (2.3.0)
+    ctf-party (3.0.0)
       docopt (~> 0.6)
+      uri (>= 0.12.1, < 0.14.0)
     docopt (0.6.1)
     dry-cli (1.0.0)
     json (2.7.1)
@@ -58,6 +59,7 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-confusable (1.10.0)
     unicode-display_width (2.5.0)
+    uri (0.13.0)
     webrick (1.8.1)
     yard (0.9.34)
     yard-coderay (0.1.0)
@@ -70,7 +72,7 @@ PLATFORMS
 DEPENDENCIES
   bundler (~> 2.1)
   commonmarker (~> 0.23)
-  ctf-party (~> 2.3)
+  ctf-party (~> 3.0)
   dry-cli (~> 1.0)
   minitest (~> 5.20)
   minitest-skip (~> 0.0)
diff --git a/unisec.gemspec b/unisec.gemspec
index 81fdb9c..7c61573 100644
--- a/unisec.gemspec
+++ b/unisec.gemspec
@@ -32,7 +32,7 @@ Gem::Specification.new do |s|
 
   s.required_ruby_version = ['>= 3.0.0', '< 4.0']
 
-  s.add_runtime_dependency('ctf-party', '~> 2.3') # string conversion
+  s.add_runtime_dependency('ctf-party', '>= 2.3', '< 4.0') # string conversion
   s.add_runtime_dependency('dry-cli', '~> 1.0') # CLI
   s.add_runtime_dependency('paint', '~> 2.3') # colorized output
   s.add_runtime_dependency('twitter_cldr', '~> 6.11', '>= 6.11.5') # ICU / CLDR