diff --git a/2017-01-29-deep-dive-into-database-timeouts-in-rails/Gemfile.lock b/2017-01-29-deep-dive-into-database-timeouts-in-rails/Gemfile.lock
index 7d11541..4087ceb 100644
--- a/2017-01-29-deep-dive-into-database-timeouts-in-rails/Gemfile.lock
+++ b/2017-01-29-deep-dive-into-database-timeouts-in-rails/Gemfile.lock
@@ -42,7 +42,7 @@ GEM
     builder (3.2.3)
     byebug (9.1.0)
     concurrent-ruby (1.1.5)
-    crass (1.0.5)
+    crass (1.0.6)
     erubi (1.7.0)
     ffi (1.11.1)
     globalid (0.4.1)
@@ -53,20 +53,22 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.3.1)
+    loofah (2.18.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
       mini_mime (>= 0.1.1)
     method_source (0.9.0)
     mini_mime (0.1.4)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.0)
     minitest (5.10.3)
     mysql2 (0.4.9)
     nio4r (2.1.0)
-    nokogiri (1.10.8)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     puma (3.12.6)
+    racc (1.6.0)
     rack (2.2.3)
     rack-test (0.7.0)
       rack (>= 1.0, < 3)
@@ -85,7 +87,7 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.3.0)
+    rails-html-sanitizer (1.4.3)
       loofah (~> 2.3)
     railties (5.1.4)
       actionpack (= 5.1.4)