diff --git a/ruby-lab-books/Gemfile.lock b/ruby-lab-books/Gemfile.lock
index ca88e39..3d9ea59 100644
--- a/ruby-lab-books/Gemfile.lock
+++ b/ruby-lab-books/Gemfile.lock
@@ -6,11 +6,11 @@ GEM
     listen (3.2.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     parallel (1.19.1)
     parser (2.7.1.2)
       ast (~> 2.4.0)
-    puma (4.3.3)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (2.2.2)
     rainbow (3.0.0)