diff --git a/Gemfile b/Gemfile
index aea3810fc824eb2057dd465d6c0b098d1f56a68a..656941c1dc65bc7cefc58ca4eb460ebe856f0ec7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 gem 'rake'
 gem 'jekyll'
 
-group :jekyll_plugins do
+group :default, :jekyll_plugins do
   gem 'jekyll-scholar'
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 563958529208bc4e9df24ce3b9e8a39cf99a7edc..04c25dc512f3abc01492bbdc3d1817597c96d76c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -34,7 +34,7 @@ GEM
       typhoeus (~> 0.7)
       yell (~> 2.0)
     i18n (0.7.0)
-    jekyll (3.1.0)
+    jekyll (3.1.1)
       colorator (~> 0.1)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 1.1)
@@ -45,7 +45,7 @@ GEM
       safe_yaml (~> 1.0)
     jekyll-sass-converter (1.4.0)
       sass (~> 3.4)
-    jekyll-scholar (5.5.1)
+    jekyll-scholar (5.6.0)
       bibtex-ruby (~> 4.0, >= 4.0.13)
       citeproc-ruby (~> 1.0)
       csl-styles (~> 1.0)