diff --git a/appengine/cloud-tasks/Gemfile.lock b/appengine/cloud-tasks/Gemfile.lock
index 8e0d86028..e49e564fc 100644
--- a/appengine/cloud-tasks/Gemfile.lock
+++ b/appengine/cloud-tasks/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.8.5)
-      public_suffix (>= 2.0.2, < 6.0)
+    addressable (2.9.0)
+      public_suffix (>= 2.0.2, < 8.0)
     diff-lcs (1.5.0)
     faraday (2.7.10)
       faraday-net_http (>= 2.0, < 3.1)
@@ -74,7 +74,7 @@ GEM
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     os (1.1.4)
-    public_suffix (5.0.3)
+    public_suffix (7.0.5)
     rack (2.2.8.1)
     rack-protection (3.1.0)
       rack (~> 2.2, >= 2.2.4)