diff --git a/Gemfile b/Gemfile
index e115d58..f47a28e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -45,7 +45,7 @@ gem 'middleman-deploy'
 gem "middleman-favicon-maker"
 
 # HTML & XML parsing smarts
-gem "nokogiri"
+gem "nokogiri", ">= 1.11.4"
 
 # Syntax highlighting
 gem "middleman-syntax"
@@ -85,7 +85,7 @@ gem "less"
 gem "asciidoctor"
 
 # mediawiki
-gem "wikicloth"
+gem "wikicloth", ">= 0.8.3"
 
 gem "coderay"
 gem "stringex"
@@ -98,6 +98,6 @@ gem 'open-uri-cached'
 gem 'font-awesome-middleman'
 
 # RSS/Atom parsing
-gem "feedjira"
+gem "feedjira", ">= 1.6.0"
 
 gem 'middleman-google-analytics'