diff --git a/Chapter11/Exercise11.02/Gemfile.lock b/Chapter11/Exercise11.02/Gemfile.lock
index c5a8bf3..9825402 100644
--- a/Chapter11/Exercise11.02/Gemfile.lock
+++ b/Chapter11/Exercise11.02/Gemfile.lock
@@ -64,14 +64,14 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.10)
     crass (1.0.4)
     erubi (1.8.0)
     execjs (2.7.0)
     ffi (1.11.1)
-    globalid (0.4.2)
-      activesupport (>= 4.2.0)
-    i18n (1.6.0)
+    globalid (1.0.1)
+      activesupport (>= 5.0)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     jbuilder (2.9.1)
       activesupport (>= 4.2.0)
@@ -87,10 +87,12 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
-    minitest (5.11.3)
+    minitest (5.17.0)
     nio4r (2.5.1)
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
@@ -161,7 +163,7 @@ GEM
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (4.1.20)
       execjs (>= 0.3.0, < 3)