diff --git a/.travis.yml b/.travis.yml
index e55f7548..b9886379 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 rvm:
-  - jruby-9.1.17.0
-  - jruby-9.2.0.0
+  - jruby-9.2.18.0
+  - jruby-head
 jdk:
   - openjdk8
 branches:
@@ -13,15 +13,13 @@ env:
 script: bundle exec rake $TASK
 matrix:
   include:
-    - rvm: jruby-head
-      env: TASK=test
-    - rvm: jruby-9.1.17.0
+    - rvm: jruby-9.2.18.0
       env: TASK=integration
-    - rvm: jruby-9.1.16.0
+    - rvm: jruby-9.2.18.0
       env: RAKE_VERSION="~>10.1"
-    - rvm: jruby-9.1.16.0
+    - rvm: jruby-9.2.18.0
       env: RAKE_VERSION="~>11.2"
-    - rvm: jruby-9.1.16.0
+    - rvm: jruby-9.2.18.0
       env: RAKE_VERSION="~>12.3"
   allow_failures:
     - rvm: jruby-head
diff --git a/README.rdoc b/README.rdoc
index 778992b6..7cd9e642 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -7,7 +7,7 @@ all of your application files for deployment to a Java environment.
 Warbler provides a sane set of out-of-the box defaults that should allow most
 Ruby applications to assemble and Just Work.
 
-Version 2.x of Warbler supports versions of JRuby from 9.1.0.0 and up.
+Version 2.x of Warbler supports versions of JRuby from 9.2.0.0 and up.
 
 Version 1.4.x of Warbler supports versions of JRuby up to 1.7.x. The {1.x-dev branch}[https://github.com/jruby/warbler/tree/1.x-dev] is the working code for this.
 
diff --git a/spec/warbler/task_spec.rb b/spec/warbler/task_spec.rb
index 6404b521..088c5dcb 100644
--- a/spec/warbler/task_spec.rb
+++ b/spec/warbler/task_spec.rb
@@ -134,7 +134,6 @@ def run_task(t)
       class_file_bytes = zf.get_input_stream('WEB-INF/lib/ruby_one_nine.class') {|io| io.read }
 
       class_file_bytes[0..3].should == [0xCA,0xFE,0xBA,0xBE].map { |magic_char| magic_char.chr }.join
-      skip('Broken in JRuby <= 9.2.0.0') if JRUBY_VERSION < '9.2.0.1' # NOTE: (9.1 has V1_7 hardcoded)
       class_file_bytes[6..7].should == bytecode_version.map { |magic_char| magic_char.chr }.join
     end
   end
diff --git a/warbler.gemspec b/warbler.gemspec
index 5f294910..c16c52e2 100644
--- a/warbler.gemspec
+++ b/warbler.gemspec
@@ -26,7 +26,7 @@ bundle up all of your application files for deployment to a Java environment.}
 
   gem.rdoc_options = ["--main", "README.rdoc", "-H", "-f", "darkfish"]
 
-  gem.required_ruby_version = ">= 2.1"
+  gem.required_ruby_version = ">= 2.5"
 
   gem.add_runtime_dependency 'rake', ['>= 10.1.0']
   gem.add_runtime_dependency 'jruby-jars', ['>= 9.0.0']