diff --git a/Gemfile.lock b/Gemfile.lock
index 4fbeb90..a958429 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,7 +56,7 @@ GEM
     html-pipeline (2.13.0)
       activesupport (>= 2)
       nokogiri (>= 1.4)
-    html-proofer (3.17.2)
+    html-proofer (3.17.4)
       addressable (~> 2.3)
       mercenary (~> 0.3)
       nokogumbo (~> 2.0)
@@ -138,7 +138,7 @@ GEM
       kramdown (~> 2.0)
     libv8 (8.4.255.0)
     liquid (4.0.3)
-    listen (3.3.1)
+    listen (3.3.3)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     loofah (2.8.0)
@@ -157,7 +157,7 @@ GEM
     multipart-post (2.1.1)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
-    nokogumbo (2.0.3)
+    nokogumbo (2.0.4)
       nokogiri (~> 1.8, >= 1.8.4)
     octokit (4.18.0)
       faraday (>= 0.9)
@@ -190,16 +190,16 @@ GEM
     regexp_parser (2.0.0)
     rexml (3.2.4)
     rouge (3.25.0)
-    rubocop (1.4.2)
+    rubocop (1.5.1)
       parallel (~> 1.10)
       parser (>= 2.7.1.5)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.8)
+      regexp_parser (>= 2.0)
       rexml
-      rubocop-ast (>= 1.1.1)
+      rubocop-ast (>= 1.2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (1.2.0)
+    rubocop-ast (1.3.0)
       parser (>= 2.7.1.5)
     ruby-enum (0.8.0)
       i18n