diff --git a/Gemfile.lock b/Gemfile.lock
index 9708a713..eb4a3210 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,13 +1,13 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.0)
+    activesupport (5.2.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    backports (3.11.3)
-    better_errors (2.4.0)
+    backports (3.11.4)
+    better_errors (2.5.0)
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
@@ -27,41 +27,41 @@ GEM
     exifr (1.3.4)
     ffi (1.9.25)
     fspath (3.1.0)
-    highline (1.7.10)
+    highline (2.0.0)
     html-pipeline (2.8.4)
       activesupport (>= 2)
       nokogiri (>= 1.4)
-    i18n (1.0.1)
+    i18n (1.1.0)
       concurrent-ruby (~> 1.0)
-    image_optim (0.26.1)
+    image_optim (0.26.2)
       exifr (~> 1.2, >= 1.2.2)
       fspath (~> 3.0)
-      image_size (~> 1.5)
+      image_size (>= 1.5, < 3)
       in_threads (~> 1.3)
       progress (~> 3.0, >= 3.0.1)
     image_optim_pack (0.5.1)
       fspath (>= 2.1, < 4)
       image_optim (~> 0.19)
-    image_size (1.5.0)
+    image_size (2.0.0)
     in_threads (1.5.0)
     method_source (0.9.0)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
     multi_json (1.13.1)
-    mustermann (1.0.2)
-    newrelic_rpm (5.2.0.345)
+    mustermann (1.0.3)
+    newrelic_rpm (5.4.0.347)
     nokogiri (1.8.4)
       mini_portile2 (~> 2.3.0)
     options (2.3.2)
     progress (3.4.0)
-    progress_bar (1.2.0)
-      highline (~> 1.6)
+    progress_bar (1.3.0)
+      highline (>= 1.6, < 3)
       options (~> 2.3.0)
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     rack (2.0.5)
-    rack-protection (2.0.3)
+    rack-protection (2.0.4)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -70,32 +70,34 @@ GEM
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
     rr (1.2.1)
-    sass (3.5.7)
+    sass (3.6.0)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    sinatra (2.0.3)
+    sinatra (2.0.4)
       mustermann (~> 1.0)
       rack (~> 2.0)
-      rack-protection (= 2.0.3)
+      rack-protection (= 2.0.4)
       tilt (~> 2.0)
-    sinatra-contrib (2.0.3)
+    sinatra-contrib (2.0.4)
       activesupport (>= 4.0.0)
       backports (>= 2.8.2)
       multi_json
       mustermann (~> 1.0)
-      rack-protection (= 2.0.3)
-      sinatra (= 2.0.3)
+      rack-protection (= 2.0.4)
+      sinatra (= 2.0.4)
       tilt (>= 1.3, < 3)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-helpers (1.2.1)
       sprockets (>= 2.2)
-    strings (0.1.1)
-      unicode-display_width (~> 1.3.0)
+    strings (0.1.4)
+      strings-ansi (~> 0.1.0)
+      unicode-display_width (~> 1.4.0)
       unicode_utils (~> 1.4.0)
+    strings-ansi (0.1.0)
     thin (1.7.2)
       daemons (~> 1.0, >= 1.0.9)
       eventmachine (~> 1.0, >= 1.0.4)
@@ -113,9 +115,9 @@ GEM
       ethon (>= 0.9.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    uglifier (4.1.17)
+    uglifier (4.1.19)
       execjs (>= 0.3.0, < 3)
-    unicode-display_width (1.3.3)
+    unicode-display_width (1.4.0)
     unicode_utils (1.4.0)
     unix_utils (0.0.15)
     yajl-ruby (1.4.1)