diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 160ba7a5be..310da85a17 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -76,7 +76,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.3.7)
+    rexml (3.3.8)
     rouge (4.0.1)
     safe_yaml (1.0.5)
     sassc (2.4.0)
@@ -95,9 +95,9 @@ DEPENDENCIES
   just-the-docs!
   pry-byebug
   rexml
-  tzinfo (~> 1.2)
+  tzinfo (~> 2.0)
   tzinfo-data
-  wdm (~> 0.1.1)
+  wdm (~> 0.2.0)
   webrick
 
 BUNDLED WITH