diff --git a/Gemfile.lock b/Gemfile.lock
index db722e5..7662c99 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     colorator (1.1.0)
     concurrent-ruby (1.1.6)
     em-websocket (0.5.1)
@@ -37,9 +37,8 @@ GEM
       jekyll (>= 3.3, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    just-the-docs (0.2.8)
-      bundler (~> 2.1.4)
-      jekyll (>= 3.8.5, < 4.1.0)
+    just-the-docs (0.3.3)
+      jekyll (>= 3.8.5)
       jekyll-seo-tag (~> 2.0)
       rake (>= 12.3.1, < 13.1.0)
     kramdown (2.2.1)
@@ -53,7 +52,7 @@ GEM
     mercenary (0.3.6)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.5)
+    public_suffix (5.0.0)
     rake (13.0.1)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)