Releases · jruby/jruby

@mrnoname1000

layout: post
title: JRuby 10.0.3.0 Released

The JRuby community is pleased to announce the release of JRuby 10.0.3.0.

Homepage: https://www.jruby.org/
Download: https://www.jruby.org/download

JRuby 10.0.3.x targets Ruby 3.4 compatibility.

Thank you to our contributors this release, you help keep JRuby moving forward! @mrnoname1000, @ngr-ilmarh, @Earlopain, @philr, @jotamartos, @kares, @aleksandrs-ledovskis, @trinistr, @katafrakt, @chadlwilson, @khasinski, @evaniainbrooks

Compatibility

JRuby now reports RbConfig::CONFIG['arch'] without a version number, as universal-java. This allows using different JDK versions without triggering RubyGems missing extension warnings for installed gems. The host Java version is still available as RbConfig::CONFIG['arch_version']. [#9107]

Standard Library

The non-gem standard library is upgraded to Ruby 3.4.5 #8967
rexml is updated to 3.4.4 to address CVE-2025-58767. #9011
syslog is moved to a default gem at version 0.4.0. The syslog gem now includes JRuby support. [#9109], ruby/syslog#1
strscan is updated to 3.1.7. [#9159]

Documentation

Ruby ri documentation for core and standard library are now included in the release distribution. #9049, #9052

All Issues/PRs

#8707 WARNING: A terminally deprecated method in sun.misc.Unsafe has been called
#8727 Cannot install latest rubocop
#8730 Launcher: Defensive fixes
#8758 Require is not working for .class file if the class is inside a module since 9.3.0
#8810 Possible fix for 8809
#8923 NameError for autoloaded constant with private_constant
#8934 JRuby under Java 22+ always thinks it's running under a TTY
#8940 Verify to_s is string or fall back on anyToString
#8947 New check for System.console tty on JDK 22+
#8955 Range#count always returns size for Integer bounds
#8956 Handle argument or block passed to Range#count
#8958 Concurrent requires can lead to StringIndexOutOfBoundsException
#8960 Fix index -1 error while searching for feature path
#8962 Upgrade polyglot and remove openssl lib hack
#8967 Update stdlib to 3.4.5 and clean up old files
#8975 Use RuboCop to clean up poms (10.x)
#8976 Regression in keyword argument matching in JRuby v10.0.1.0
#8978 Additional fixes for scheme-based globbing
#8984 glob refactoring
#8985 Fix language spec where error string changed
#8987 InvokeDynamicSupport.findVirtual fails with IllegalAccessException: symbolic reference class is not accessible
#8989 Explicitly request access before Lookup.find*
#8994 autoload + private_constant do not play well together
#8995 private_constant should just update existing autoload
#8996 Avoid binding unreadable modules' classes
#8998 Time#localtime incorrectly treats zero offset as UTC (regression in v10.0.2.0)
#9006 Consider .class a source extension during search
#9007 Handle warn(foo, uplevel: nil)
#9009 Encoding a string with undefined chars fails with NoMethodError
#9010 Fix "+00:00" and 0 being treated as UTC by Time#localtime and Time.at
#9011 Update rexml gem to solve CVE-2025-58767
#9016 [fix] regression calling static hash() method on Java proxy
#9017 can not use Java class with static hash() method
#9018 Parser does not convert newlines reading \r\n on Windows
#9019 We need to remove \r from heredoc strings
#9021 Retire safe double processing utilities
#9024 Move all main classes to org.jruby.main package
#9027 Add "since" to bare Deprecated annotations
#9035 IO#read does not clear code-range for buffer argument
#9036 fix: clear code-range when re-using a string buffer
#9038 Add opens and native access to all jar manifests
#9039 Update all jnr dependencies
#9041 Migrate .java-version contents to .jruby.release
#9049 ri docs are not available for core
#9050 Marshal fails to load an encoding with an encoding ivar
#9051 Ignore encoding when unmarshaling an Encoding
#9052 Download and include in dist CRuby's rdoc data
#9058 Implement efficient unshifting
#9059 [Reserve extra space before elements when unshifting][#9059]
#9063 [Hash's compare_by_identity state does not marshal][#9063]
#9065 [Preserve compare_by_identity for marshaled Hash][#9065]
#9068 [Windows CI spec runs][#9068]
#9073 [fix: Permit overriding of JSA file location using ENV variable][#9073]
#9084 [object_id improvements][#9084]
#9094 [Implement GC.config [Ruby 3.4]][#9094]
#9097 [Update jruby-openssl to v0.15.5 to resolve BouncyCastle 1.79 vulnerability (sonatype-2025-001911).][#9097]
#9098 [Fix CoverageData.mergeLines when coverage increases][#9098]
#9101 [Cached fixnums for immediate values][#9101]
#9103 [Update jruby-openssl to 0.15.5][#9103]
#9106 [Use smaller default size for many collections][#9106]
#9107 [Separate Java version out of rbconfig 'arch'][#9107]
#9108 [Tidy up default gems][#9108]
#9109 [Switch to syslog gem][#9109]
#9110 [Calling inspect on proc resets line in source_location][#9110]
#9112 [Prevent modifying state in RubyProc][#9112]
#9117 [Add file path to error message when unlinking non-existing file][#9117]
#9122 [Unexpected jruby.sh error messages on Windows][#9122]
#9127 [fix(launcher): correct parsing of java release files under Bash/msys2 etc on Windows][#9127]
#9138 [Copy Data type's var table manager with new realClass][#9138]
#9141 [refactorings and cleanup motivated by error-prone][#9141]
#9142 [Change GC's methods from module_function to metaclass methods][#9142]
#9145 [Never trust external content for FString][#9145]
#9152 [Marshal.dump corruption for large Array structures][#9152]
#9157 [bump included gems][#9157]
#9158 [Use same key match for containsKey][#9158]
#9159 [Update strscan to 3.1.7][#9159]
#9182 [Fix NoMethodError when encoding with invalid: :replace option][#9182]
#9188 [Different arguments for each.map vs each and map alone (10.0)][#9188]
#9189 [Fixes #8952. Nest it should be different its][#9189]
#9190 [Backport implicit local variable fixes from 10.1][#9190]
#9191 [Fixes #8952. Nested 'it' behavior broken][#9191]
#9192 [Stab at Fixing #8976][#9192]
#9194 [BigDecimal#+, #-, #add, #sub always try to cast result of coercion to RubyBigDecimal][#9194]
#9196 [require "bigdecimal" does not install BigDecimal() if it was called previously][#9196]
#9199 [Output formatting differences between jRuby 10.0.0.1 and Ruby 3.4 when converting Float to JSON][#9199]
#9200 [Extract float formatting into a static method to use with to_json][#9200]
#9203 [Invalidate method caches from generated populators][#9203]
#9204 [Fix BigDecimal#+, #-, #add, #sub failing when coercing doesn't return a BigDecimal][#9204]
#9205 [Fix encoding fallback error handling and error message formatting][#9205]

The JRuby community is pleased to announce the release of JRuby 9.4.14.0.

Homepage: https://www.jruby.org/
Download: https://www.jruby.org/download

JRuby 9.4.14.x targets Ruby 3.1 compatibility.

Thank you to our contributors this release, you help keep JRuby moving forward! @matthias-fratz-bsz, @ikaronen-relex, @ylecuyer

Compatibility

Ruby version is now 3.1.7. (#8966)

Libraries

strscan is updated to 3.1.5. (#8897)
cgi is updated to 0.3.7 to resolve CVE-2025-27220 and CVE-2025-27219 (#8954, #8966)
uri is updated to 0.12.4. (#8966)
net-smtp is updated to 0.3.1.1. (#8966)
rss is updated to 0.3.1. (#8966)
Non-gem stdlib has been updated to Ruby 3.1.7 sources. (#8966)

Build

jruby-maven-plugins is updated to 3.0.6 to resolve issues with garbled gem poms. (#8898)
The stdlib build scripts have been modified to work with latest polyglot-ruby. (#8634, #8963)

Usability

bin/ruby and bin/ruby.bat are now shipped in the distribution, to make installation simpler. (#8875)

29 Issues and PRs resolved for 9.4.14.0

The JRuby community is pleased to announce the release of JRuby 10.0.2.0.

Homepage: https://www.jruby.org/
Download: https://www.jruby.org/download

JRuby 10.0.2.x targets Ruby 3.4 compatibility.

Thank you to our contributors this release, you help keep JRuby moving forward!

7 Issues and PRs resolved for 10.0.2.0

The JRuby community is pleased to announce the release of JRuby 10.0.1.0.

Homepage: https://www.jruby.org/
Download: https://www.jruby.org/download

JRuby 10.0.1.x targets Ruby 3.4 compatibility.

Thank you to our contributors this release, you help keep JRuby moving forward!

Compatibility

Zeitwerk is now fully supported. (#6781, #8852, #8853, #8863, #8777)

Libraries

The net-imap library is updated from 0.5.4 to 0.5.8 (#8826, #8828)

62 Issues and PRs resolved for 10.0.1.0

The JRuby community is pleased to announce the release of JRuby 9.4.13.0.

Homepage: https://www.jruby.org/
Download: https://www.jruby.org/download

JRuby 9.4.13.x targets Ruby 3.1 compatibility.

Thank you to our contributors this release, you help keep JRuby moving forward!

Stability

Fixed a slow memory leak in subclass management. (#8842, #8844)
Fixed a potential deadlock during multi-threaded boot and concurrent JIT compilation. (#8845, #8849)

Usability

Backported JRuby .sh launcher features from JRuby 10, including AppCDS flags for improved startup time. (#8565, #8625, #8626, #8652, #8653, #8656, #8754)

56 Issues and PRs resolved for 9.4.13.0

The JRuby community is pleased to announce the release of JRuby 10.0.0.1.

Homepage: https://www.jruby.org/
Download: https://www.jruby.org/download

We've jumped to Ruby 3.4 compatibility and Java 21 minimum to bring you the best Ruby on JVM experience possible. We are confident this is the most compatible and stable major release we've ever had.

Security

jruby-openssl has been updated to 0.15.4, which re-enables hostname verification by default. This addresses CVE-2025-46551 and GHSA-72qj-48g4-5xgx.

The JRuby community is pleased to announce the release of JRuby 9.4.12.1.

Homepage: https://www.jruby.org/
Download: https://www.jruby.org/download

JRuby 9.4.12.x targets Ruby 3.1 compatibility.

Security

jruby-openssl has been updated to 0.15.4, which re-enables hostname verification by default. This addresses CVE-2025-46551 and GHSA-72qj-48g4-5xgx.

@andsel

The JRuby community is pleased to announce the release of JRuby 10.0.0.0.

Homepage: https://www.jruby.org/
Download: https://www.jruby.org/download

JRuby 10 is finally here! We've jumped to Ruby 3.4 compatibility and Java 21 minimum to bring you the best Ruby on JVM experience possible. We are confident this is the most compatible and stable major release we've ever had.

Our blog post on JRuby 10 provides a high-level overview of the major changes, with some additional details below. We will update the blog post with additional detailed articles over the coming weeks: https://blog.jruby.org/2025/04/jruby-10-part-1-whats-new

As with any "dot zero" release, we are planning a series of quick updates to address any last-minute issues that snuck into the release. Please file bugs for any issues you see while testing JRuby 10.0: https://github.com/jruby/jruby/issues

Contributors

The JRuby core team today includes Charles Oliver Nutter (@headius), Thomas Enebo (@enebo), and Karol Bucek (@kares). Over the past year we have been honored to accept contributions from many other developers, and JRuby 10 would not be as stable or complete without their help:

[@andsel], [@mrnoname1000], [@ahorek], [@evaniainbrooks], [@edipofederle], [@ccutrer], [@danini-the-panini], [@ntkme], [@andrykonchin], [@mohamedhafez], [@jsvd], [@jpcamara], [@mullermp], [@ikaronen-relex], [@jimtng], [@ryannevell], [@eregon], [@moste00], [@sk757a]

Ruby Compatibility

Ruby compatibility has been updated to Ruby 3.4. We consider this release equivalent to Ruby 3.4.2.
Most features of Ruby 3.2, 3.3, 3.4 are complete, but some are still in progress. See our checklists based on CRuby's release notes: Ruby 3.2, Ruby 3.3, Ruby 3.4
Except where a more recent gem was available or a library is unsupported by JRuby, we have included the same standard libraries as Ruby 3.4.

Java 21

After nearly a decade of supporting Java 8, the JRuby team decided it's time for us to move to a more modern version of Java. The new requirement of Java 21 will allow us to take advantage of many features that were impossible to utilize while simultaneously supporting Java 8:

On-by-default optimization using InvokeDynamic, which has significantly improved since Java 8.
Support for thousands of Fibers using the lightweight virtual thread support from Project Loom.
Fast native function calling and native memory management using Project Panama.
Greatly improved startup time using Application Class Data Store, enabled by default by our launcher executables.
Easier access to post-Java 21 features like the Ahead-of-time compiler cache in Project Leyden.

Upgrading to JRuby 10

This release marks a big leap forward for JRuby users, and we are standing by to help with your transition from JRuby 9.x or migration from CRuby. Support services are available to help migrate your critical applications. Many existing users trust JRuby Support by Headius Enterprises to keep their applications in peak condition and to prepare for future updates.

Issues and Pull Requests

There are hundreds of closed issues and merged pull requests in this release. Visit the JRuby 10.0.0.0 milestone for the full list.

201 Issues and PRs resolved for 10.0.0.0

#6094 [Less modes to run JRuby, and one single mode to benchmark JRuby][#6094]
#6598 [Modularize all the things][#6598]
#7516 [Improvements to instance variable shaping][#7516]
#7638 [ Add support for Ruby 3.2 attached_object][#7638]
#7646 [Add Integer#ceildiv][#7646]
#7788 [Add support for a rescue trace event][#7788]
#7871 [Ruby 3.2 - Remove deprecated methods: trust/taint and friends][#7871]
#7909 [Intermittent failure on duped pipe tests JDK 19+][#7909]
#7973 [Use gem for tempfile][#7973]
#8058 [Ruby 3.3 support: Queue#freeze now raises TypeError][#8058]
#8059 [Ruby 3.3 support: add symbolize_names kwarg to MatchData#named_captures][#8059]
#8084 [remove JRuby-specific (deprecated) Class#subclasses(arg)][#8084]
#8143 [Remove versioned methods][#8143]
#8145 [Refactor external API to ease extension porting][#8145]
#8152 [New parser][#8152]
#8153 [Update parser to 3.4][#8153]
#8154 [Update and run CRuby 3.4 tests][#8154]
#8159 [Fix last obvious syntax problem (involving nested pattern kwargs going off rails)][#8159]
#8160 [Proc#{dup,clone} should be like other objs][#8160]
#8161 [Finalizers also are on cloned/duped objects][#8161]
#8162 [Finalizers also are on cloned/duped objects][#8162]
#8163 [tracepoint only runs in thread it was enabled on][#8163]
#8164 [{,Unbound}Method#{proc,dup} need to be more like other Ruby objects][#8164]
#8165 [Add MatchData#deconstruct...][#8165]
#8168 [First stab at Err#typeError in api][#8168]
#8169 [Update json to eliminate references to "19" methods][#8169]
#8170 [Implement block_given? call as optimized instruction][#8170]
#8172 [Optimized method and callee][#8172]
#8174 [Unify call paths for most framed scopes][#8174]
#8175 [These may have been hanging due to a block_given? bug][#8175]
#8176 [Simplify fixnum and string ranges][#8176]
#8177 [A few frozen string and symbol optimizations][#8177]
#8180 [Optimizations for dynamic string building][#8180]
#8181 [Add ability to generically optimize instr during LOP][#8181]
#8214 [Disable eager constants in JRuby 10][#8214]
#8223 [Make Exception#detailed_message,full_message pass specs][#8223]
#8226 [Implement "chilled" Strings][#8226]
#8227 [Narrow frame name optimization to method scopes][#8227]
#8228 [IO#readlines accepts another arg][#8228]
#8229 [Fix full_message formatting and Throwable impl][#8229]
#8230 [More frame name fixes][#8230]
#8233 [Implement Regexp#linear_time?][#8233]
#8236 [More string interpolation optimizations][#8236]
#8238 [Implement regexp timeout][#8238]
#8240 [Fix IO#each_line specs][#8240]
#8249 [Reduce deopt from print use of $_][#8249]
#8253 [Optimize literal fixnum and float arrays][#8253]
#8259 [Improved representation of JRuby for JVM tools][#8259]
#8260 [Rewrite Marshal.dump logic for efficiency][#8260]
#8262 [Proc spreading changed in 3.2 with kwrest][#8262]
#8263 [Implement Coverage::supported?][#8263]
#8266 [Enable invokedynamic by default][#8266]
#8267 [Print out paths for syntax errors][#8267]
#8268 [Unbound method][#8268]
#8276 [Struct specs][#8276]
#8277 [Time#new spec fixes.][#8277]
#8279 [Reduce overhead of ObjectSpace#each_object when disabled][#8279]
#8291 [Fix remaining copy stream specs][#8291]
#8293 [Eliminate last consumers of Variable logic][#8293]
#8295 [3 new Convert API methods][#8295]
#8297 [Make common method for handling to_r calls in Rational][#8297]
#8298 [Api changes][#8298]
#8299 [Linkage errors from java_import are lazy][#8299]
#8300 [Do initialize classes during java_import][#8300]
#8301 [Decode ByteList properly for toString][#8301]
#8304 [Eager initialize java_import'ed classes][#8304]
#8317 [New asFixnum, asBoolean, asString in Convert][#8317]
#8330 [Eliminate dynscope for leaf blocks with break/return][#8330]
#8375 [Revisit chilled strings and pass all specs][#8375]
#8376 [Get most Enumerator::Product specs passing][#8376]
#8377 [No backtick in errors][#8377]
#8378 [Update to latest CRuby 3.4 tests and stdlib][#8378]
#8390 [Fix foreach with mode: kwarg][#8390]
#8402 [Hash#inspect: no arrow for symbol keys. add spacing to match C Ruby][#8402]
#8410 [Permute indy invoke paths to reduce uncached stack][#8410]
#8414 [Pre-generate specialized object shapes][#8414]
#8418 [Some small refactoring while looking for example snippet code of new API][#8418]
#8420 [A bunch of new API calls and new JRubyAPI annotation][#8420]
#8430 [More dogfooding of new API][#8430]
#8432 [argumentError API conversions with a lot of runtime to tc replacement][#8432]
#8437 [context through RubyArray using more API][#8437]
#8444 [Nearly all newArray is converted to API][#8444]
#8450 [Enable invokedynamic by default][#8450]
#8452 [newFixnum,Symbol,Float are unified with asXXX. ][#8452]
#8454 [more api conversion around Time+][#8454]
#8459 [API: Nearly all remaining newArgumentError to argumentError][#8459]
#8460 [more newSymbols made into asSymbol][#8460]
#8461 [new runtimeError api][#8461]
#8467 [api: new rangeError, indexError ][#8467]
#8468 [to_s with TC. new dupString api][#8468]
#8470 [Inspect wrong object when symbol/string wanted in error][#8470]
#8471 [more illegal formatting added to printf/format][#8471]
#8472 [Add new Check#checkEmbeddedNulls to replace StringSupport method][#8472]
#8473 [Make Time load its Ruby-impl side][#8473]
#8474 [Create#newEmptyString][#8474]
#8475 [Create#new{,Small}Hash][#8475]
#8484 [Various array optimizations][#8484]
#8485 [Fixes for MRI tests][#8485]
#8489 [Bind directly to all supported arities of native methods][#8489]
#8490 [New define API][#8490]
#8491 [Make hash() always call to hash(ThreadContext) and deprecate][#8491]
#8492 [...

The JRuby community is pleased to announce the release of JRuby 9.4.12.0.

Homepage: https://www.jruby.org/
Download: https://www.jruby.org/download

JRuby 9.4.12.x targets Ruby 3.1 compatibility.

Thank you to our contributors this release, you help keep JRuby moving forward!

Critical Fixes

Added additional locking to the new Class#subclasses implementation to fix a concurrent modification error. #8602, #8603

Standard Library

jar-dependencies upgraded to 0.5.4 to fix an issue parsing Maven output on Java versions 9 and higher. #8606, [#8515]

4 Issues and PRs resolved for 9.4.12.0

The JRuby community is pleased to announce the release of JRuby 9.4.11.0.

Homepage: https://www.jruby.org/
Download: https://www.jruby.org/download

JRuby 9.4.11.x targets Ruby 3.1 compatibility. This release fixes two critical bugs in JRuby 9.4.10.0 and we recommend users skip that version when upgrading.

Thank you to our contributors this release, you help keep JRuby moving forward!

Karol Bucek @kares

Critical Fixes

Fixed an issue where Mutex lock acquisition may leave the Mutex locked if an asynchronous Thread interrupt happens at the same time. #8585, #8586
Fixed a memory leak where singleton classes would leave behind bookkeeping objects that accumulated over time. #8591, #8598

Standard Library

rubygems been updated to version 3.6.3 to fix an incompatibility with bundler 2.6. #8590, #8596
bundler has been updated to version 2.6.3. #8596
jruby-openssl has been updated to 0.15.3. #8458, Release 0.15.3
jar-dependencies has been updated to 0.5.3 to fix remaining issues loading Maven jars in containerized environments. #8593, #8595

Uh oh!

Releases: jruby/jruby

JRuby 10.0.3.0

layout: post title: JRuby 10.0.3.0 Released

Compatibility

Standard Library

Documentation

All Issues/PRs

Contributors

Uh oh!

JRuby 9.4.14.0 Released

Compatibility

Libraries

Build

Usability

29 Issues and PRs resolved for 9.4.14.0

Uh oh!

JRuby 10.0.2.0

7 Issues and PRs resolved for 10.0.2.0

Uh oh!

JRuby 10.0.1.0

Compatibility

Libraries

62 Issues and PRs resolved for 10.0.1.0

Uh oh!

JRuby 9.4.13.0

Stability

Usability

56 Issues and PRs resolved for 9.4.13.0

Uh oh!

JRuby 10.0.0.1 Released

Security

Uh oh!

JRuby 9.4.12.1 Released

Security

Uh oh!

JRuby 10.0.0.0 Released

Contributors

Ruby Compatibility

Java 21

Upgrading to JRuby 10

Issues and Pull Requests

201 Issues and PRs resolved for 10.0.0.0

Uh oh!

JRuby 9.4.12.0 Released

Critical Fixes

Standard Library

4 Issues and PRs resolved for 9.4.12.0

Uh oh!

JRuby 9.4.11.0 Released

Critical Fixes

Standard Library

9 Issues and PRs resolved for 9.4.11.0

Uh oh!

layout: post
title: JRuby 10.0.3.0 Released