diff --git a/.travis.yml b/.travis.yml
index d6fe7d0..2ecd290 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: ruby
 sudo: false
-script: "set -e && bundle exec jekyll build && bundle exec htmlproof ./_site"
+script: "gem install github-pages jekyll-mentions jemoji jekyll-redirect-from jekyll-sitemap && set -e && bundle exec jekyll build && bundle exec htmlproof ./_site"
 rvm: 2.1
 notifications:
     email: false
diff --git a/Gemfile b/Gemfile
deleted file mode 100644
index 4931ee6..0000000
--- a/Gemfile
+++ /dev/null
@@ -1,7 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'github-pages'
-gem 'jekyll-mentions'
-gem 'jemoji'
-gem 'jekyll-redirect-from'
-gem 'jekyll-sitemap'
diff --git a/_config.yml b/_config.yml
index e4b4b2f..31a15d8 100644
--- a/_config.yml
+++ b/_config.yml
@@ -21,3 +21,4 @@ gems:
     - jekyll-sitemap
 sitemap:
     file: "/sitemap.xml"
+exclude: [PGP, PHP, keybase.txt]