diff --git a/.travis.yml b/.travis.yml
index 61b3661..92d617b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,6 +16,7 @@ rvm:
   - "2.5.8"
   - "2.6.6"
   - "2.7.2"
+  - "3.0.0"
   - ruby-head
 
 jobs:
@@ -33,6 +34,12 @@ jobs:
       gemfile: gemfiles/rails_5_1.gemfile
     - rvm: 2.7.2
       gemfile: gemfiles/rails_5_2.gemfile
+    - rvm: 3.0.0
+      gemfile: gemfiles/rails_5_0.gemfile
+    - rvm: 3.0.0
+      gemfile: gemfiles/rails_5_1.gemfile
+    - rvm: 3.0.0
+      gemfile: gemfiles/rails_5_2.gemfile
     - rvm: ruby-head
       gemfile: gemfiles/rails_5_0.gemfile
     - rvm: ruby-head
diff --git a/CHANGELOG.rdoc b/CHANGELOG.rdoc
index cf98bf3..4eaab3a 100644
--- a/CHANGELOG.rdoc
+++ b/CHANGELOG.rdoc
@@ -5,6 +5,7 @@
 	in a request.
 * Add initializer to ensure Timeliness v0.4+ ambiguous date config is set
   correctly when using `use_euro_formats` or `remove_use_formats'.
+* Add Ruby 3 compatibility
 * Add Rails 6.1 compatibility
 
 Breaking Changes
diff --git a/lib/validates_timeliness/extensions/date_time_select.rb b/lib/validates_timeliness/extensions/date_time_select.rb
index ff5fe13..f52e785 100644
--- a/lib/validates_timeliness/extensions/date_time_select.rb
+++ b/lib/validates_timeliness/extensions/date_time_select.rb
@@ -43,7 +43,7 @@ module ValidatesTimeliness
           values[POSITION.key(position.to_i)] = value.to_i
         end
 
-        DateTimeValue.new(values)
+        DateTimeValue.new(**values)
       end
     end
   end