diff --git a/examples/stacks/jekyll/myblog/Gemfile.lock b/examples/stacks/jekyll/myblog/Gemfile.lock
index 67524889551..02bc5b4c41d 100644
--- a/examples/stacks/jekyll/myblog/Gemfile.lock
+++ b/examples/stacks/jekyll/myblog/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.8.7)
-      public_suffix (>= 2.0.2, < 7.0)
+    addressable (2.9.0)
+      public_suffix (>= 2.0.2, < 8.0)
     colorator (1.1.0)
     concurrent-ruby (1.3.4)
     em-websocket (0.5.3)
@@ -52,7 +52,7 @@ GEM
       jekyll-seo-tag (~> 2.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (6.0.1)
+    public_suffix (7.0.5)
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
diff --git a/examples/stacks/rails/blog/Gemfile.lock b/examples/stacks/rails/blog/Gemfile.lock
index bc844bb76b4..3429644a6c1 100644
--- a/examples/stacks/rails/blog/Gemfile.lock
+++ b/examples/stacks/rails/blog/Gemfile.lock
@@ -74,7 +74,7 @@ GEM
       minitest (>= 5.1, < 6)
       securerandom (>= 0.3)
       tzinfo (~> 2.0, >= 2.0.5)
-    addressable (2.8.9)
+    addressable (2.9.0)
       public_suffix (>= 2.0.2, < 8.0)
     base64 (0.3.0)
     benchmark (0.5.0)
@@ -167,8 +167,8 @@ GEM
     puma (6.6.1)
       nio4r (~> 2.0)
     racc (1.8.1)
-    rack (3.2.5)
-    rack-session (2.1.1)
+    rack (3.2.6)
+    rack-session (2.1.2)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)
     rack-test (2.2.0)