diff --git a/technology/guides/03-Debugging/BuggyProject/Gemfile.lock b/technology/guides/03-Debugging/BuggyProject/Gemfile.lock
index 88a34b8..b6e7993 100644
--- a/technology/guides/03-Debugging/BuggyProject/Gemfile.lock
+++ b/technology/guides/03-Debugging/BuggyProject/Gemfile.lock
@@ -25,7 +25,8 @@ GEM
       ruby_dep (~> 1.2)
     lumberjack (1.0.13)
     method_source (0.9.0)
-    mustermann (1.0.2)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
     nenv (0.3.0)
     notiffany (0.1.1)
       nenv (~> 0.1)
@@ -34,7 +35,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     rack (2.2.8.1)
-    rack-protection (2.0.3)
+    rack-protection (2.2.3)
       rack
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
@@ -53,15 +54,16 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.7.0)
     rspec-support (3.7.1)
+    ruby2_keywords (0.0.5)
     ruby_dep (1.5.0)
     shellany (0.0.1)
-    sinatra (2.0.3)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.3)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     thor (0.20.0)
-    tilt (2.0.8)
+    tilt (2.3.0)
 
 PLATFORMS
   ruby