diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index d36cf445d..697b3cd27 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -19,6 +19,7 @@ jobs:
           - '2.7'
           - '3.0'
           - '3.1'
+          - '3.2'
           - jruby
           - truffleruby-head
         include:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e9f26dbf3..469e4104a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,13 @@
 
 All notable changes to this project will be documented in this file. For info on how to format all future additions to this file please reference [Keep A Changelog](https://keepachangelog.com/en/1.0.0/).
 
-## [3.0.2] -2022-12-05
+## [3.0.3] - 2022-12-27
+
+### Fixed
+
+- `Rack::URLMap` uses non-deprecated form of `Regexp.new`. ([#1998](https://github.com/rack/rack/pull/1998), [@weizheheng](https://github.com/weizheheng))
+
+## [3.0.2] - 2022-12-05
 
 ### Fixed
 
diff --git a/lib/rack/urlmap.rb b/lib/rack/urlmap.rb
index afb97eea4..99c4d8236 100644
--- a/lib/rack/urlmap.rb
+++ b/lib/rack/urlmap.rb
@@ -37,7 +37,7 @@ def remap(map)
         end
 
         location = location.chomp('/')
-        match = Regexp.new("^#{Regexp.quote(location).gsub('/', '/+')}(.*)", nil, 'n')
+        match = Regexp.new("^#{Regexp.quote(location).gsub('/', '/+')}(.*)", Regexp::NOENCODING)
 
         [host, location, match, app]
       }.sort_by do |(host, location, _, _)|
diff --git a/lib/rack/version.rb b/lib/rack/version.rb
index 97bd47eb2..27691d821 100644
--- a/lib/rack/version.rb
+++ b/lib/rack/version.rb
@@ -25,7 +25,7 @@ def self.version
     VERSION
   end
 
-  RELEASE = "3.0.2"
+  RELEASE = "3.0.3"
 
   # Return the Rack release as a dotted string.
   def self.release