diff --git a/.travis.yml b/.travis.yml
index 69a3e21..7bd181b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,5 @@
 rvm:
+  - 2.6.10
   - 2.7.8
   - 3.1.6
   - 3.2.5
diff --git a/README.md b/README.md
index 116d87c..61b0a73 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # xmp - Extensible Metadata Platform (XMP) parser
 
-MP provides object oriented interface to [XMP data](http://en.wikipedia.org/wiki/Extensible_Metadata_Platform). XMP data can be found in PDF, JPEG, GIF, PNG, and many other formats.
+XMP provides an object oriented interface to [XMP data](http://en.wikipedia.org/wiki/Extensible_Metadata_Platform). XMP data can be found in PDF, JPEG, GIF, PNG, and many other formats.
 
 ## Supported Formats
 
@@ -59,9 +59,12 @@ gem 'exifr', '~> 1.3'
 ```
 
 ## Requirements
-* Ruby 2 or Ruby 3
-* Nokogiri (1.10 or newer, gem dependency - will be installed automatically)
-* EXIFR (1.3 or newer) - optional
+* Ruby 2 (supported on >= 2.6, though xmp may work on earlier versions) or Ruby 3
+* nokogiri (>= 1.10). The xmp gem depends on this gem. It will be installed automatically.
+  * On Ruby 2.6, nokogiri 1.13.10 will be installed; nokogiri >= 1.14 require Ruby 2.7.
+  * On Ruby 2.7, nokogiri 1.15.5 will be installed; nokogiri >= 1.16 require Ruby 3.
+  * See https://nokogiri.org/CHANGELOG.html for nokogiri support for older or newer Ruby versions.
+* exifr (>= 1.3). This gem is optional. If you need it, add it to your Gemfile.
 
 ## Development
 
diff --git a/xmp.gemspec b/xmp.gemspec
index 6396c8d..5f03365 100644
--- a/xmp.gemspec
+++ b/xmp.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |s|
 
   s.extra_rdoc_files = %w(README.md)
 
-  s.required_ruby_version = '>= 2.7.0'
+  s.required_ruby_version = '>= 2.6.0'
 
   s.add_dependency 'nokogiri', '~> 1.0'