diff --git a/tests/integration/modules/apt/Gemfile.lock b/tests/integration/modules/apt/Gemfile.lock
index e96f32d..f8a23bb 100644
--- a/tests/integration/modules/apt/Gemfile.lock
+++ b/tests/integration/modules/apt/Gemfile.lock
@@ -2,7 +2,8 @@ GEM
   remote: https://rubygems.org/
   specs:
     CFPropertyList (2.2.7)
-    addressable (2.3.6)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     autoparse (0.3.3)
       addressable (>= 2.3.1)
       extlib (>= 0.9.15)
@@ -90,6 +91,7 @@ GEM
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
+    public_suffix (5.0.0)
     puppet (3.5.1)
       facter (> 1.6, < 3)
       hiera (~> 1.0)