diff --git a/CHANGELOG.md b/CHANGELOG.md
index d4253f8e46..1208599df3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 See the changelogs for the individual engines for more details for releases 9.0 and up
 
+## 9.2.4 / 2021-10-02
+
+* Require at least version 1.12.5 of nokogiri to avoid a security issue
+* Drop support for Ruby 2.4 since it is incompatible with nokogiri 1.12.5
+
 ## 9.2.3 / 2021-05-22
 
 * Bump Rails dependency to 5.2.6
diff --git a/publify_amazon_sidebar/CHANGELOG.md b/publify_amazon_sidebar/CHANGELOG.md
index 6ca1ef99db..f1c4ab1479 100644
--- a/publify_amazon_sidebar/CHANGELOG.md
+++ b/publify_amazon_sidebar/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 9.2.4 / 2021-10-02
+
+* Drop support for Ruby 2.4 since it is incompatible with nokogiri 1.12.5
+
 ## 9.2.3 / 2021-05-22
 
 * Depend on `publify_core` gem to set Rails dependency
diff --git a/publify_amazon_sidebar/lib/publify_amazon_sidebar/version.rb b/publify_amazon_sidebar/lib/publify_amazon_sidebar/version.rb
index 1fb1885c1d..d96dc8f70d 100644
--- a/publify_amazon_sidebar/lib/publify_amazon_sidebar/version.rb
+++ b/publify_amazon_sidebar/lib/publify_amazon_sidebar/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module PublifyAmazonSidebar
-  VERSION = "9.2.3"
+  VERSION = "9.2.4"
 end
diff --git a/publify_amazon_sidebar/publify_amazon_sidebar.gemspec b/publify_amazon_sidebar/publify_amazon_sidebar.gemspec
index 7c770f8cff..c9be1d29e3 100644
--- a/publify_amazon_sidebar/publify_amazon_sidebar.gemspec
+++ b/publify_amazon_sidebar/publify_amazon_sidebar.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |s|
 
   s.files = File.open("Manifest.txt").readlines.map(&:chomp)
 
-  s.add_dependency "publify_core", "~> 9.2.3"
+  s.add_dependency "publify_core", "~> 9.2.4"
 
   s.add_development_dependency "rspec-rails", "~> 4.0"
   s.add_development_dependency "simplecov", "~> 0.18.5"
diff --git a/publify_core/CHANGELOG.md b/publify_core/CHANGELOG.md
index 8813df145f..87ffbdec50 100644
--- a/publify_core/CHANGELOG.md
+++ b/publify_core/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## 9.2.4 / 2021-10-02
+
+* Explicitly require at least version 1.12.5 of nokogiri to avoid a security issue
+* Drop support for Ruby 2.4 since it is incompatible with nokogiri 1.12.5
+
 ## 9.2.3 / 2021-05-22
 
 * Bump Rails dependency to 5.2.6
diff --git a/publify_core/lib/publify_core/version.rb b/publify_core/lib/publify_core/version.rb
index c1830f47e6..fce8c26627 100644
--- a/publify_core/lib/publify_core/version.rb
+++ b/publify_core/lib/publify_core/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module PublifyCore
-  VERSION = "9.2.3"
+  VERSION = "9.2.4"
 end
diff --git a/publify_textfilter_code/CHANGELOG.md b/publify_textfilter_code/CHANGELOG.md
index ce38700223..1af4c0b130 100644
--- a/publify_textfilter_code/CHANGELOG.md
+++ b/publify_textfilter_code/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 9.2.4 / 2021-10-02
+
+* Drop support for Ruby 2.4 since it is incompatible with nokogiri 1.12.5
+
 ## 9.2.3 / 2021-05-22
 
 * Depend on `publify_core` gem to set Rails dependency
diff --git a/publify_textfilter_code/lib/publify_textfilter_code/version.rb b/publify_textfilter_code/lib/publify_textfilter_code/version.rb
index 28ce3f6e1f..42f7cadd9a 100644
--- a/publify_textfilter_code/lib/publify_textfilter_code/version.rb
+++ b/publify_textfilter_code/lib/publify_textfilter_code/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module PublifyTextfilterCode
-  VERSION = "9.2.3"
+  VERSION = "9.2.4"
 end
diff --git a/publify_textfilter_code/publify_textfilter_code.gemspec b/publify_textfilter_code/publify_textfilter_code.gemspec
index 2a0b251e11..3dfbde8eca 100644
--- a/publify_textfilter_code/publify_textfilter_code.gemspec
+++ b/publify_textfilter_code/publify_textfilter_code.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency "coderay", "~> 1.1.0"
   s.add_dependency "htmlentities", "~> 4.3"
-  s.add_dependency "publify_core", "~> 9.2.3"
+  s.add_dependency "publify_core", "~> 9.2.4"
 
   s.add_development_dependency "rspec-rails", "~> 4.0"
   s.add_development_dependency "simplecov", "~> 0.18.5"