diff --git a/Gemfile b/Gemfile
index 95a7ecf301fab4efcd991e9d94e806ae0c2bd214..7b1e783259485553ffaf6d49f1af12f75f29c429 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,13 +9,13 @@ source "https://rubygems.org"
 #
 # This will help ensure the proper Jekyll version is running.
 # Happy Jekylling!
-gem "jekyll", "~> 3.7.3"
+gem "jekyll", "~> 3.8.5"
 gem "bundler", "> 1.16.1"
 
 # This is the default theme for new Jekyll sites. You may change this to anything you like.
-gem "minima", "~> 2.0"
-gem 'jekyll-theme-primer', '~> 0.5.2'
-gem 'jekyll-theme-lcsb-default', '~> 0.2.5', :git => "https://git-r3lab.uni.lu/core-services/jekyll-theme-lcsb-default.git", :branch => "master"
+gem "minima", "~> 2.5"
+gem 'jekyll-theme-primer', '~> 0.5.3'
+gem 'jekyll-theme-lcsb-default', '~> 0.2.18', :git => "https://git-r3lab.uni.lu/core-services/jekyll-theme-lcsb-default.git", :branch => "master"
 
 # If you want to use GitHub Pages, remove the "gem "jekyll"" above and
 # uncomment the line below. To upgrade, run `bundle update github-pages`.
@@ -31,5 +31,5 @@ end
 gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 
 # Performance-booster for watching directories on Windows
-gem "wdm", "~> 0.1.0" if Gem.win_platform?
+gem "wdm", "~> 0.1.1" if Gem.win_platform?
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 5313dac79a11b05ef97fa7f19d495d9c02c70395..79423c55845c4087d569c441d59f3e4e53edb856 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,19 +13,19 @@ GEM
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
     colorator (1.1.0)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.4)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7-x64-mingw32)
-    faraday (0.15.3)
+    faraday (0.15.4)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.25-x64-mingw32)
+    ffi (1.10.0-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.7.4)
+    jekyll (3.8.5)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -40,8 +40,8 @@ GEM
       safe_yaml (~> 1.0)
     jekyll-feed (0.11.0)
       jekyll (~> 3.3)
-    jekyll-github-metadata (2.9.4)
-      jekyll (~> 3.1)
+    jekyll-github-metadata (2.12.1)
+      jekyll (~> 3.4)
       octokit (~> 4.0, != 4.4.0)
     jekyll-paginate-v2 (1.9.4)
       jekyll (~> 3.0)
@@ -53,10 +53,10 @@ GEM
       jekyll (~> 3.5)
       jekyll-github-metadata (~> 2.9)
       jekyll-seo-tag (~> 2.0)
-    jekyll-watch (2.0.0)
+    jekyll-watch (2.1.2)
       listen (~> 3.0)
     kramdown (1.17.0)
-    liquid (4.0.0)
+    liquid (4.0.1)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -67,18 +67,18 @@ GEM
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     multipart-post (2.0.0)
-    octokit (4.12.0)
+    octokit (4.13.0)
       sawyer (~> 0.8.0, >= 0.5.3)
-    pathutil (0.16.1)
+    pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (3.0.3)
     rb-fsevent (0.10.3)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
-    rouge (3.2.1)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
+    rouge (3.3.0)
     ruby_dep (1.5.0)
     safe_yaml (1.0.4)
-    sass (3.6.0)
+    sass (3.7.3)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -97,13 +97,13 @@ PLATFORMS
   x64-mingw32
 
 DEPENDENCIES
-  bundler (~> 1.16.1)
-  jekyll (~> 3.7.3)
+  bundler (> 1.16.1)
+  jekyll (~> 3.8.5)
   jekyll-feed (~> 0.6)
   jekyll-paginate-v2 (~> 1.7)
-  jekyll-theme-lcsb-default (~> 0.2.5)!
-  jekyll-theme-primer (~> 0.5.2)
-  minima (~> 2.0)
+  jekyll-theme-lcsb-default (~> 0.2.18)!
+  jekyll-theme-primer (~> 0.5.3)
+  minima (~> 2.5)
   tzinfo-data
   wdm (~> 0.1.0)