ruby · kddnewton · Oct 16, 2025 · Oct 16, 2025
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -6,6 +6,16 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 
 ## [Unreleased]
 
+## [1.6.0] - 2025-10-16
+
+### Added
+
+- Add support for passing `"current"` as the version option to `Prism.*` APIs.
+
+### Changed
+
+- Remove a compiler warning for a missing unsigned cast for a shift value.
+
 ## [1.5.2] - 2025-10-09
 
 ### Changed
@@ -685,7 +695,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 
 - 🎉 Initial release! 🎉
 
-[unreleased]: https://github.com/ruby/prism/compare/v1.5.2...HEAD
+[unreleased]: https://github.com/ruby/prism/compare/v1.6.0...HEAD
+[1.6.0]: https://github.com/ruby/prism/compare/v1.5.2...v1.6.0
 [1.5.2]: https://github.com/ruby/prism/compare/v1.5.1...v1.5.2
 [1.5.1]: https://github.com/ruby/prism/compare/v1.5.0...v1.5.1
 [1.5.0]: https://github.com/ruby/prism/compare/v1.4.0...v1.5.0

diff --git a/Gemfile.lock b/Gemfile.lock
@@ -1,15 +1,15 @@
 PATH
   remote: .
   specs:
-    prism (1.5.2)
+    prism (1.6.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.3)
     benchmark-ips (2.14.0)
     date (3.4.1)
-    erb (5.0.3)
+    erb (5.1.1)
     ffi (1.17.2)
     mini_portile2 (2.8.9)
     nokogiri (1.18.10)

diff --git a/docs/releasing.md b/docs/releasing.md
@@ -49,6 +49,7 @@ bundle install
 ```sh
 for VERSION in "2.7" "3.0" "3.1" "3.2" "3.3" "3.4"; do docker run -it --rm -v "$PWD":/usr/src/app -w /usr/src/app -e BUNDLE_GEMFILE="gemfiles/$VERSION/Gemfile" "ruby:$VERSION" bundle update; done
 docker run -it --rm -v "$PWD":/usr/src/app -w /usr/src/app -e BUNDLE_GEMFILE="gemfiles/3.5/Gemfile" ruby:3.5.0-preview1 bundle update
+docker run -it --rm -v "$PWD":/usr/src/app -w /usr/src/app -e BUNDLE_GEMFILE="gemfiles/jruby/Gemfile" jruby:latest bundle update
 BUNDLE_GEMFILE=gemfiles/truffleruby/Gemfile chruby-exec truffleruby -- bundle update
 ```
 
@@ -73,26 +74,4 @@ git push
 ## Publishing
 
 * Update the GitHub release page with a copy of the latest entry in the `CHANGELOG.md` file.
-* Publish the gem to [rubygems.org](rubygems.org). Note that you must have access to the `prism` gem to do this.
-
-```sh
-bundle exec rake release
-```
-
-* Generate the `wasm` artifact (or download it from GitHub actions and put it in `javascript/src/prism.wasm`).
-
-```sh
-make wasm
-```
-
-* Publish the JavaScript package to [npmjs.com](npmjs.com). Note that you must have access to the `@ruby/prism` package to do this.
-
-```sh
-npm publish
-```
-
-* Publish the rust crate to [crates.io](crates.io). Note that you must have access to the `ruby-prism-sys` and `ruby-prism` crates to do this.
-
-```sh
-bundle exec rake cargo:publish:real
-```
+* Push a new tag to the GitHub repository, following the `vX.Y.Z` format.
diff --git a/ext/prism/extension.h b/ext/prism/extension.h
@@ -1,7 +1,7 @@
 #ifndef PRISM_EXT_NODE_H
 #define PRISM_EXT_NODE_H
 
-#define EXPECTED_PRISM_VERSION "1.5.2"
+#define EXPECTED_PRISM_VERSION "1.6.0"
 
 #include <ruby.h>
 #include <ruby/encoding.h>

diff --git a/gemfiles/2.7/Gemfile.lock b/gemfiles/2.7/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../..
   specs:
-    prism (1.5.2)
+    prism (1.6.0)
 
 GEM
   remote: https://rubygems.org/

diff --git a/gemfiles/3.0/Gemfile.lock b/gemfiles/3.0/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../..
   specs:
-    prism (1.5.2)
+    prism (1.6.0)
 
 GEM
   remote: https://rubygems.org/

diff --git a/gemfiles/3.1/Gemfile.lock b/gemfiles/3.1/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../..
   specs:
-    prism (1.5.2)
+    prism (1.6.0)
 
 GEM
   remote: https://rubygems.org/

diff --git a/gemfiles/3.2/Gemfile.lock b/gemfiles/3.2/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../..
   specs:
-    prism (1.5.2)
+    prism (1.6.0)
 
 GEM
   remote: https://rubygems.org/

diff --git a/gemfiles/3.3/Gemfile.lock b/gemfiles/3.3/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../..
   specs:
-    prism (1.5.2)
+    prism (1.6.0)
 
 GEM
   remote: https://rubygems.org/

diff --git a/gemfiles/3.4/Gemfile.lock b/gemfiles/3.4/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../..
   specs:
-    prism (1.5.2)
+    prism (1.6.0)
 
 GEM
   remote: https://rubygems.org/

diff --git a/gemfiles/3.5/Gemfile.lock b/gemfiles/3.5/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../..
   specs:
-    prism (1.5.2)
+    prism (1.6.0)
 
 GEM
   remote: https://rubygems.org/

diff --git a/gemfiles/jruby/Gemfile.lock b/gemfiles/jruby/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../..
   specs:
-    prism (1.5.2)
+    prism (1.6.0)
 
 GEM
   remote: https://rubygems.org/

diff --git a/gemfiles/truffleruby/Gemfile.lock b/gemfiles/truffleruby/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../..
   specs:
-    prism (1.5.2)
+    prism (1.6.0)
 
 GEM
   remote: https://rubygems.org/

diff --git a/include/prism/version.h b/include/prism/version.h
@@ -14,16 +14,16 @@
 /**
  * The minor version of the Prism library as an int.
  */
-#define PRISM_VERSION_MINOR 5
+#define PRISM_VERSION_MINOR 6
 
 /**
  * The patch version of the Prism library as an int.
  */
-#define PRISM_VERSION_PATCH 2
+#define PRISM_VERSION_PATCH 0
 
 /**
  * The version of the Prism library as a constant string.
  */
-#define PRISM_VERSION "1.5.2"
+#define PRISM_VERSION "1.6.0"
 
 #endif
diff --git a/javascript/package.json b/javascript/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ruby/prism",
-  "version": "1.5.2",
+  "version": "1.6.0",
   "description": "Prism Ruby parser",
   "type": "module",
   "main": "src/index.js",

diff --git a/prism.gemspec b/prism.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |spec|
   spec.name = "prism"
-  spec.version = "1.5.2"
+  spec.version = "1.6.0"
   spec.authors = ["Shopify"]
   spec.email = ["ruby@shopify.com"]
 

diff --git a/rust/Cargo.lock b/rust/Cargo.lock
diff --git a/rust/ruby-prism-sys/Cargo.toml b/rust/ruby-prism-sys/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ruby-prism-sys"
-version = "1.5.2"
+version = "1.6.0"
 edition = "2021"
 license-file = "../../LICENSE.md"
 repository = "https://github.com/ruby/prism"

diff --git a/rust/ruby-prism-sys/tests/utils_tests.rs b/rust/ruby-prism-sys/tests/utils_tests.rs
@@ -12,7 +12,7 @@ fn version_test() {
         CStr::from_ptr(version)
     };
 
-    assert_eq!(&cstring.to_string_lossy(), "1.5.2");
+    assert_eq!(&cstring.to_string_lossy(), "1.6.0");
 }
 
 #[test]

diff --git a/rust/ruby-prism/Cargo.toml b/rust/ruby-prism/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ruby-prism"
-version = "1.5.2"
+version = "1.6.0"
 edition = "2021"
 license-file = "../../LICENSE.md"
 repository = "https://github.com/ruby/prism"
@@ -26,7 +26,7 @@ serde = { version = "1.0", features = ["derive"] }
 serde_yaml = "0.9"
 
 [dependencies]
-ruby-prism-sys = { version = "1.5.2", path = "../ruby-prism-sys" }
+ruby-prism-sys = { version = "1.6.0", path = "../ruby-prism-sys" }
 
 [features]
 default = ["vendored"]

diff --git a/templates/java/org/prism/Loader.java.erb b/templates/java/org/prism/Loader.java.erb
@@ -101,8 +101,8 @@ public class Loader {
         expect((byte) 'M', "incorrect prism header");
 
         expect((byte) 1, "prism major version does not match");
-        expect((byte) 5, "prism minor version does not match");
-        expect((byte) 2, "prism patch version does not match");
+        expect((byte) 6, "prism minor version does not match");
+        expect((byte) 0, "prism patch version does not match");
 
         expect((byte) 1, "Loader.java requires no location fields in the serialized output");
 

diff --git a/templates/javascript/src/deserialize.js.erb b/templates/javascript/src/deserialize.js.erb
@@ -1,8 +1,8 @@
 import * as nodes from "./nodes.js";
 
 const MAJOR_VERSION = 1;
-const MINOR_VERSION = 5;
-const PATCH_VERSION = 2;
+const MINOR_VERSION = 6;
+const PATCH_VERSION = 0;
 
 // The DataView getFloat64 function takes an optional second argument that
 // specifies whether the number is little-endian or big-endian. It does not

diff --git a/templates/lib/prism/serialize.rb.erb b/templates/lib/prism/serialize.rb.erb
@@ -10,11 +10,11 @@ module Prism
 
     # The minor version of prism that we are expecting to find in the serialized
     # strings.
-    MINOR_VERSION = 5
+    MINOR_VERSION = 6
 
     # The patch version of prism that we are expecting to find in the serialized
     # strings.
-    PATCH_VERSION = 2
+    PATCH_VERSION = 0
 
     # Deserialize the dumped output from a request to parse or parse_file.
     #
-Original file line number
+Diff line change
@@ Expand Up / @@ -12,7 +12,7 @@ fn version_test() { @@
             CStr::from_ptr(version)
         };
-        assert_eq!(&cstring.to_string_lossy(), "1.5.2");
+        assert_eq!(&cstring.to_string_lossy(), "1.6.0");
     }
     #[test]
@@ Expand Down @@