diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
index c2e7176..fde8709 100644
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -2,6 +2,8 @@
 
 ## unreleased
 
+## v3.4.0 (2024-01-16)
+
 * Provide access to media types using media_type and media_types methods [#22](https://github.com/toy/image_size/issues/22) [@toy](https://github.com/toy)
 * Allow fetching from HTTP server by requiring image_size/uri [@toy](https://github.com/toy)
 * Fix for ArgumentError when requiring only image_size/uri_reader (without image_size) [@toy](https://github.com/toy)
diff --git a/README.markdown b/README.markdown
index ec02eaf..2479076 100644
--- a/README.markdown
+++ b/README.markdown
@@ -145,4 +145,4 @@ puts Benchmark.measure{ p ImageSize.url(url).size }
 This code is free to use under the terms of the [Ruby's licence](LICENSE.txt).
 
 Original author: Keisuke Minami <keisuke@rccn.com>.\
-Further development 2010-2023 Ivan Kuchin https://github.com/toy/image_size
+Further development 2010-2024 Ivan Kuchin https://github.com/toy/image_size
diff --git a/image_size.gemspec b/image_size.gemspec
index 2dbfbd8..fab8e65 100644
--- a/image_size.gemspec
+++ b/image_size.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |s|
   s.name        = 'image_size'
-  s.version     = '3.3.0'
+  s.version     = '3.4.0'
   s.summary     = %q{Measure image size/dimensions using pure Ruby}
   s.description = %q{Measure following file dimensions: apng, avif, bmp, cur, emf, gif, heic, heif, ico, j2c, jp2, jpeg, jpx, mng, pam, pbm, pcx, pgm, png, ppm, psd, svg, swf, tiff, webp, xbm, xpm}
   s.homepage    = "https://github.com/toy/#{s.name}"