diff --git a/technology/guides/08-Continuous-Integration/simple-sinatra-app/Gemfile.lock b/technology/guides/08-Continuous-Integration/simple-sinatra-app/Gemfile.lock
index af2be62..cc67f8a 100644
--- a/technology/guides/08-Continuous-Integration/simple-sinatra-app/Gemfile.lock
+++ b/technology/guides/08-Continuous-Integration/simple-sinatra-app/Gemfile.lock
@@ -4,8 +4,8 @@ GEM
     diff-lcs (1.5.0)
     mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.8)
-    puma (5.6.2)
+    nio4r (2.7.0)
+    puma (5.6.8)
       nio4r (~> 2.0)
     rack (2.2.8.1)
     rack-protection (2.2.3)