diff --git a/Gemfile.lock b/Gemfile.lock
index 39c5de5..f3c92d7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,14 +18,17 @@ GEM
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
-    ffi (1.16.3)
-    formatador (0.2.5)
-    guard (2.18.0)
+    ffi (1.17.2)
+    formatador (1.2.2)
+      reline
+    guard (2.19.1)
       formatador (>= 0.2.4)
       listen (>= 2.7, < 4.0)
+      logger (~> 1.6)
       lumberjack (>= 1.0.12, < 2.0)
       nenv (~> 0.1)
       notiffany (~> 0.0)
+      ostruct (~> 0.6)
       pry (>= 0.13.0)
       shellany (~> 0.0)
       thor (>= 0.18.1)
@@ -35,7 +38,7 @@ GEM
       guard (~> 2.8)
       guard-compat (~> 1.0)
       multi_json (~> 1.8)
-    guard-nanoc (2.1.9)
+    guard-nanoc (2.1.10)
       guard (~> 2.8)
       guard-compat (~> 1.0)
       nanoc-cli (~> 4.11, >= 4.11.14)
@@ -44,14 +47,15 @@ GEM
     immutable-ruby (0.2.0)
       concurrent-ruby (~> 1.1)
       sorted_set (~> 1.0)
+    io-console (0.8.1)
     json_schema (0.21.0)
     kramdown (2.5.1)
       rexml (>= 3.3.9)
-    listen (3.7.1)
+    listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     logger (1.7.0)
-    lumberjack (1.2.4)
+    lumberjack (1.4.2)
     memo_wise (1.13.0)
     method_source (1.1.0)
     mini_portile2 (2.8.9)
@@ -99,6 +103,7 @@ GEM
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
+    ostruct (0.6.3)
     parallel (1.27.0)
     pastel (0.8.0)
       tty-color (~> 0.5)
@@ -119,6 +124,8 @@ GEM
       ffi (~> 1.0)
     rbtree (0.4.6)
     redcarpet (3.6.1)
+    reline (0.6.2)
+      io-console (~> 0.5)
     rexml (3.4.2)
     rspec (3.13.2)
       rspec-core (~> 3.13.0)