diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8cfe6f5f..4b15dcdc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,19 @@
+# Changelog
+
+## 2.15.0 (August 2, 2021) [☰](https://github.com/kpumuk/meta-tags/compare/v2.14.0...v2.15.0)
+
+Changes:
+
+- Added Ruby 3.0 to supported versions
+- Ruby 2.5 is now a required minimum version (we dropped official support for Ruby versions older than 2.5 about 8 months ago)
+- Added `skip_canonical_links_on_noindex` configuration variable that allows to disable canonical links of the pages that are excluded from indexing ([214](https://github.com/kpumuk/meta-tags/pull/214))
+- Added support for `itemprop` in `_` tag for custom tags ([203](https://github.com/kpumuk/meta-tags/pull/203))
+
+Bugfixes:
+
+- Fixed error "can't modify frozen String" in `strip_tags`.
+- Fixed Ruby warning about an instance variable that is not initialized.
+
 ## 2.14.0 (December 10, 2020) [☰](https://github.com/kpumuk/meta-tags/compare/v2.13.0...v2.14.0)
 
 Changes:
diff --git a/README.md b/README.md
index 03e684bc..cd76aa10 100644
--- a/README.md
+++ b/README.md
@@ -697,6 +697,24 @@ set_meta_tags twitter: {
 # <meta name="twitter:image:height" content="100">
 ```
 
+Special parameter `itemprop` can be used on a "anonymous" tag "\_" to generate "itemprop" HTML attribute:
+
+```ruby
+set_meta_tags twitter: {
+  card:  "photo",
+  image: {
+    _:        "http://example.com/1.png",
+    width:    100,
+    height:   100,
+    itemprop: "image",
+  }
+}
+# <meta name="twitter:card" content="photo">
+# <meta name="twitter:image" content="http://example.com/1.png" itemprop="image">
+# <meta name="twitter:image:width" content="100">
+# <meta name="twitter:image:height" content="100">
+```
+
 Further reading:
 
 - [Twitter Cards Documentation](https://dev.twitter.com/cards/)
diff --git a/lib/meta_tags/version.rb b/lib/meta_tags/version.rb
index a4537898..69f6bcef 100644
--- a/lib/meta_tags/version.rb
+++ b/lib/meta_tags/version.rb
@@ -2,6 +2,6 @@
 
 module MetaTags
   # Gem version.
-  VERSION = '2.14.0'
+  VERSION = '2.15.0'
   public_constant :VERSION
 end