diff --git a/rails/devtips/blog/Gemfile.lock b/rails/devtips/blog/Gemfile.lock
index cd741ac6..c9f86645 100644
--- a/rails/devtips/blog/Gemfile.lock
+++ b/rails/devtips/blog/Gemfile.lock
@@ -84,15 +84,17 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.0)
     minitest (5.10.2)
     multi_json (1.12.1)
     nio4r (2.1.0)
-    nokogiri (1.10.8)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     pg (0.21.0)
     public_suffix (2.0.5)
     puma (3.12.4)
+    racc (1.6.0)
     rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)