diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index dc5b8249..50aede15 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -9,12 +9,11 @@ GEM
       connection_pool (>= 2.2.5)
       drb
       i18n (>= 1.6, < 2)
-      logger (>= 1.4.2)
-      minitest (>= 5.1, < 6)
-      securerandom (>= 0.3)
-      tzinfo (~> 2.0, >= 2.0.5)
-    addressable (2.8.6)
-      public_suffix (>= 2.0.2, < 6.0)
+      minitest (>= 5.1)
+      mutex_m
+      tzinfo (~> 2.0)
+    addressable (2.9.0)
+      public_suffix (>= 2.0.2, < 8.0)
     base64 (0.3.0)
     benchmark (0.5.0)
     bigdecimal (4.0.1)
@@ -239,7 +238,7 @@ GEM
       sawyer (~> 0.9)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (5.0.4)
+    public_suffix (5.1.1)
     racc (1.8.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)