diff --git a/Gemfile.lock b/Gemfile.lock
index 1814bc3..387af07 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -94,9 +94,9 @@ GEM
       http_parser.rb (~> 0)
     erubi (1.12.0)
     eventmachine (1.2.7)
-    ffi (1.15.5)
+    ffi (1.16.3)
     formatador (1.1.0)
-    guard (2.18.0)
+    guard (2.18.1)
       formatador (>= 0.2.4)
       listen (>= 2.7, < 4.0)
       lumberjack (>= 1.0.12, < 2.0)
@@ -132,13 +132,13 @@ GEM
     json_schema (0.21.0)
     kramdown (2.4.0)
       rexml
-    listen (3.8.0)
+    listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    lumberjack (1.2.8)
+    lumberjack (1.2.10)
     memo_wise (1.7.0)
     method_source (1.0.0)
     minitest (5.17.0)
@@ -282,7 +282,7 @@ GEM
     stringio (3.0.4)
     sysexits (1.2.0)
     temple (0.8.2)
-    thor (1.2.1)
+    thor (1.3.1)
     tilt (2.0.11)
     tty-color (0.6.0)
     tty-command (0.10.1)