diff --git a/validation/inspec/FedRAMP/Moderate/libraries/Gemfile.lock b/validation/inspec/FedRAMP/Moderate/libraries/Gemfile.lock
index 137d2dd..ef94348 100644
--- a/validation/inspec/FedRAMP/Moderate/libraries/Gemfile.lock
+++ b/validation/inspec/FedRAMP/Moderate/libraries/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     blankslate (2.1.2.4)
     builder (3.2.3)
     coderay (1.1.1)
@@ -63,7 +63,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    public_suffix (2.0.5)
+    public_suffix (4.0.6)
     rainbow (2.2.2)
       rake
     rake (12.0.0)