diff --git a/Gemfile b/Gemfile
index 7e604be5..4eb3ea35 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,26 +4,26 @@ gem "amp-jekyll"
 gem "autoprefixer-rails"
 gem "crass"
 gem "font-awesome-sass"
-gem "html-proofer"
+gem "html-proofer", ">= 3.16.0"
 gem "image_optim_bin" # Optional
 gem "image_optim_pack"
 gem "image_optim"
 gem "jekyll-assets"
-gem "jekyll-feed"
+gem "jekyll-feed", ">= 0.15.1"
 gem "jekyll-gist"
-gem "jekyll-last-modified-at"
+gem "jekyll-last-modified-at", ">= 1.3.2"
 gem "jekyll-paginate-v2"
 gem "jekyll-redirect-from"
-gem "jekyll-seo-tag"
+gem "jekyll-seo-tag", ">= 2.7.0"
 gem "jekyll-seo"
 gem "jekyll-sitemap"
-gem "jekyll"
-gem "jemoji"
+gem "jekyll", ">= 3.9.1"
+gem "jemoji", ">= 0.13.0"
 gem "kramdown-parser-gfm"
 gem "mini_magick"
 gem "rake"
 gem "rouge"
-gem "sanitize"
+gem "sanitize", ">= 5.2.2"
 gem "sass"
-gem "sprockets", "4.0.0.beta8"
+gem "sprockets", "4.2.0"
 gem "uglifier"
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