diff --git a/episodes/137/waypoint-examples/docker/ruby/Gemfile.lock b/episodes/137/waypoint-examples/docker/ruby/Gemfile.lock
index 3aff7458..d9d3f383 100644
--- a/episodes/137/waypoint-examples/docker/ruby/Gemfile.lock
+++ b/episodes/137/waypoint-examples/docker/ruby/Gemfile.lock
@@ -83,17 +83,17 @@ GEM
       nokogiri (~> 1)
       rake
     mini_mime (1.0.2)
-    mini_portile2 (2.5.1)
+    mini_portile2 (2.8.0)
     minitest (5.14.2)
     msgpack (1.3.3)
     nio4r (2.5.4)
-    nokogiri (1.11.5)
-      mini_portile2 (~> 2.5.0)
+    nokogiri (1.13.3)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     pg (0.21.0)
     puma (5.0.2)
       nio4r (~> 2.0)
-    racc (1.5.2)
+    racc (1.6.0)
     rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)