diff --git a/.travis.yml b/.travis.yml
index 584ee86..4f4e004 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,48 +2,16 @@ language: ruby
 
 matrix:
   include:
-  - rvm: 1.8
-    gemfile: gemfiles/gemfile-1-8
-    os: linux
-    dist: trusty
-    env: SKIP_ADAPTERS=yajl,gson,jr_jackson,nsjsonserialization
-  - rvm: jruby-18mode
-    gemfile: gemfiles/gemfile-1-8-jruby
-    os: linux
-    dist: trusty
-    env: SKIP_ADAPTERS=oj,yajl,nsjsonserialization
-  - rvm: 1.9
-    gemfile: gemfiles/gemfile-1-9
-    os: linux
-    dist: trusty
-    env: SKIP_ADAPTERS=gson,jr_jackson,nsjsonserialization
-  - rvm: jruby-19mode
-    gemfile: gemfiles/gemfile-1-9-jruby
-    os: linux
-    dist: trusty
-    env: SKIP_ADAPTERS=oj,yajl,nsjsonserialization
-  - rvm: 2.0
-    gemfile: gemfiles/gemfile-2-0
-    env: SKIP_ADAPTERS=gson,jr_jackson,nsjsonserialization
-  - rvm: 2.1
-    gemfile: gemfiles/gemfile-2-0
-    env: SKIP_ADAPTERS=gson,jr_jackson,nsjsonserialization
-  - rvm: 2.2
-    gemfile: gemfiles/gemfile-2-0
-    env: SKIP_ADAPTERS=gson,jr_jackson,nsjsonserialization
-  - rvm: 2.3
-    gemfile: gemfiles/gemfile-2-3
-    env: SKIP_ADAPTERS=gson,jr_jackson,nsjsonserialization
-  - rvm: 2.4
+  - rvm: '3.0'
     gemfile: gemfiles/gemfile-2-3
     env: SKIP_ADAPTERS=gson,jr_jackson,nsjsonserialization
-  - rvm: 2.5
+  - rvm: '3.1'
     gemfile: gemfiles/gemfile-2-3
     env: SKIP_ADAPTERS=gson,jr_jackson,nsjsonserialization
-  - rvm: 2.6
+  - rvm: '3.2'
     gemfile: gemfiles/gemfile-2-3
     env: SKIP_ADAPTERS=gson,jr_jackson,nsjsonserialization
-  - rvm: 2.7
+  - rvm: '3.3'
     gemfile: gemfiles/gemfile-2-3
     env: SKIP_ADAPTERS=gson,jr_jackson,nsjsonserialization
   - rvm: ruby-head
diff --git a/README.md b/README.md
index cf87849..ca880e3 100644
--- a/README.md
+++ b/README.md
@@ -60,15 +60,11 @@ MultiJSON falls back to [OkJson][], a simple, vendorable JSON parser.
 This library aims to support and is [tested against][travis] the following Ruby
 implementations:
 
-* Ruby 1.8
-* Ruby 1.9
-* Ruby 2.0
-* Ruby 2.1
-* Ruby 2.2
-* Ruby 2.4
-* Ruby 2.5
-* Ruby 2.6
-* Ruby 2.7
+
+* Ruby 3.0
+* Ruby 3.1
+* Ruby 3.2
+* Ruby 3.3
 * [JRuby][]
 
 If something doesn't work in one of these implementations, it's a bug.