diff --git a/talks/ThomasWodarek-IntroToGoogleCloudPlatform/testtubeCode/app/Gemfile.lock b/talks/ThomasWodarek-IntroToGoogleCloudPlatform/testtubeCode/app/Gemfile.lock
index 7cd9bd0..b5d6872 100644
--- a/talks/ThomasWodarek-IntroToGoogleCloudPlatform/testtubeCode/app/Gemfile.lock
+++ b/talks/ThomasWodarek-IntroToGoogleCloudPlatform/testtubeCode/app/Gemfile.lock
@@ -60,7 +60,7 @@ GEM
     os (1.0.0)
     public_suffix (3.0.3)
     raabro (1.1.6)
-    rack (2.0.6)
+    rack (2.0.8)
     rack-protection (2.0.5)
       rack
     rake (12.3.2)