diff --git a/.gitignore b/.gitignore
index be97056d0..77006dce3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@
 .bundle
 .DS_Store
 .jekyll-metadata
+.jekyll-cache
 .sass-cache
 _asset_bundler_cache
 _site
@@ -13,4 +14,3 @@ node_modules
 npm-debug.log*
 /vendor
 /.idea
-Gemfile.lock
diff --git a/Gemfile b/Gemfile
index 2a2d1c12a..c6e740753 100755
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,11 @@
 source "https://rubygems.org"
-gem 'jekyll-redirect-from'
-gemspec
+
+gem "jekyll", "~> 3.9"
+gem "jekyll-paginate-v2", "~> 2.0"
+gem "jekyll-sitemap", "~> 1.4"
+gem "jekyll-gist", "~> 1.5"
+gem "jekyll-feed", "~> 0.15.0"
+gem "jekyll-data", "~> 1.1"
+gem "jemoji", "~> 0.12"
+gem "kramdown-parser-gfm", "~> 1.1"
+gem "webrick", "~> 1.7"
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 000000000..67e083b84
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,123 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activesupport (6.0.3.7)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+      zeitwerk (~> 2.2, >= 2.2.2)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    colorator (1.1.0)
+    concurrent-ruby (1.1.8)
+    em-websocket (0.5.2)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0.6.0)
+    eventmachine (1.2.7)
+    faraday (1.4.1)
+      faraday-excon (~> 1.1)
+      faraday-net_http (~> 1.0)
+      faraday-net_http_persistent (~> 1.1)
+      multipart-post (>= 1.2, < 3)
+      ruby2_keywords (>= 0.0.4)
+    faraday-excon (1.1.0)
+    faraday-net_http (1.0.1)
+    faraday-net_http_persistent (1.1.0)
+    ffi (1.15.0)
+    forwardable-extended (2.6.0)
+    gemoji (3.0.1)
+    html-pipeline (2.14.0)
+      activesupport (>= 2)
+      nokogiri (>= 1.4)
+    http_parser.rb (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    jekyll (3.9.1)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (~> 0.7)
+      jekyll-sass-converter (~> 1.0)
+      jekyll-watch (~> 2.0)
+      kramdown (>= 1.17, < 3)
+      liquid (~> 4.0)
+      mercenary (~> 0.3.3)
+      pathutil (~> 0.9)
+      rouge (>= 1.7, < 4)
+      safe_yaml (~> 1.0)
+    jekyll-data (1.1.1)
+      jekyll (>= 3.3, < 5.0.0)
+    jekyll-feed (0.15.1)
+      jekyll (>= 3.7, < 5.0)
+    jekyll-gist (1.5.0)
+      octokit (~> 4.2)
+    jekyll-paginate-v2 (2.0.0)
+      jekyll (~> 3.0)
+    jekyll-sass-converter (1.5.2)
+      sass (~> 3.4)
+    jekyll-sitemap (1.4.0)
+      jekyll (>= 3.7, < 5.0)
+    jekyll-watch (2.2.1)
+      listen (~> 3.0)
+    jemoji (0.12.0)
+      gemoji (~> 3.0)
+      html-pipeline (~> 2.2)
+      jekyll (>= 3.0, < 5.0)
+    kramdown (2.3.1)
+      rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
+    liquid (4.0.3)
+    listen (3.5.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    mercenary (0.3.6)
+    minitest (5.14.4)
+    multipart-post (2.1.1)
+    nokogiri (1.11.4-arm64-darwin)
+      racc (~> 1.4)
+    octokit (4.21.0)
+      faraday (>= 0.9)
+      sawyer (~> 0.8.0, >= 0.5.3)
+    pathutil (0.16.2)
+      forwardable-extended (~> 2.6)
+    public_suffix (4.0.6)
+    racc (1.5.2)
+    rb-fsevent (0.11.0)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
+    rexml (3.2.5)
+    rouge (3.26.0)
+    ruby2_keywords (0.0.4)
+    safe_yaml (1.0.5)
+    sass (3.7.4)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+    sawyer (0.8.2)
+      addressable (>= 2.3.5)
+      faraday (> 0.8, < 2.0)
+    thread_safe (0.3.6)
+    tzinfo (1.2.9)
+      thread_safe (~> 0.1)
+    webrick (1.7.0)
+    zeitwerk (2.4.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  jekyll (~> 3.9)
+  jekyll-data (~> 1.1)
+  jekyll-feed (~> 0.15.0)
+  jekyll-gist (~> 1.5)
+  jekyll-paginate-v2 (~> 2.0)
+  jekyll-sitemap (~> 1.4)
+  jemoji (~> 0.12)
+  kramdown-parser-gfm (~> 1.1)
+  webrick (~> 1.7)
+
+BUNDLED WITH
+   2.2.15
diff --git a/_config.yml b/_config.yml
index 4ec30ac00..d148eb95d 100755
--- a/_config.yml
+++ b/_config.yml
@@ -202,7 +202,6 @@ plugins:
   - jekyll-gist
   - jekyll-feed
   - jemoji
-  - jekyll-redirect-from
 
 # mimic GitHub Pages with --safe
 whitelist:
diff --git a/minimal-mistakes-jekyll.gemspec b/minimal-mistakes-jekyll.gemspec
deleted file mode 100755
index 133a8d426..000000000
--- a/minimal-mistakes-jekyll.gemspec
+++ /dev/null
@@ -1,31 +0,0 @@
-# coding: utf-8
-
-Gem::Specification.new do |spec|
-  spec.name                    = "minimal-mistakes-jekyll"
-  spec.version                 = "4.18.1"
-  spec.authors                 = ["Michael Rose"]
-
-  spec.summary                 = %q{A flexible two-column Jekyll theme.}
-  spec.homepage                = "https://github.com/mmistakes/minimal-mistakes"
-  spec.license                 = "MIT"
-
-  spec.metadata["plugin_type"] = "theme"
-
-  spec.files                   = `git ls-files -z`.split("\x0").select do |f|
-    f.match(%r{^(assets|_(data|includes|layouts|sass)/|(LICENSE|README|CHANGELOG)((\.(txt|md|markdown)|$)))}i)
-  end
-
-  spec.add_runtime_dependency "jekyll", "~> 3.3"
-  spec.add_runtime_dependency "jekyll-paginate-v2", "~> 1.9.4"
-  spec.add_runtime_dependency "jekyll-sitemap", "~> 1.0"
-  spec.add_runtime_dependency "jekyll-gist", "~> 1.4"
-  spec.add_runtime_dependency "jekyll-feed", "~> 0.13.0"
-  spec.add_runtime_dependency "jekyll-data", "~> 1.0"
-  spec.add_runtime_dependency "jekyll-redirect-from", "~> 0.16.0"
-  spec.add_runtime_dependency "jemoji", "~> 0.8"
-  spec.add_runtime_dependency "kramdown-parser-gfm"
-
-
-  spec.add_development_dependency "bundler", "~> 2.1.4"
-  spec.add_development_dependency "rake", "~> 13.0.1"
-end