diff --git a/technology/guides/08-Continuous-Integration/simple-sinatra-app-to-deploy/Gemfile.lock b/technology/guides/08-Continuous-Integration/simple-sinatra-app-to-deploy/Gemfile.lock
index 5136dfe..1945b8a 100644
--- a/technology/guides/08-Continuous-Integration/simple-sinatra-app-to-deploy/Gemfile.lock
+++ b/technology/guides/08-Continuous-Integration/simple-sinatra-app-to-deploy/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
       xpath (~> 3.2)
     diff-lcs (1.4.4)
     mini_mime (1.0.2)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     nio4r (2.7.0)
     nokogiri (1.16.2-x86_64-linux)
@@ -23,7 +23,7 @@ GEM
       nio4r (~> 2.0)
     racc (1.7.3)
     rack (2.2.8.1)
-    rack-protection (2.1.0)
+    rack-protection (2.2.3)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -41,13 +41,13 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.0)
-    ruby2_keywords (0.0.2)
-    sinatra (2.1.0)
-      mustermann (~> 1.0)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
       rack (~> 2.2)
-      rack-protection (= 2.1.0)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
-    tilt (2.0.10)
+    tilt (2.3.0)
     xpath (3.2.0)
       nokogiri (~> 1.8)