diff --git a/Gemfile.lock b/Gemfile.lock
index 959a0f1..12aa538 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,16 +9,17 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     aws-sigv4 (1.0.3)
     diff-lcs (1.3)
     diffy (3.3.0)
     httpclient (2.8.3)
-    imperium (0.5.0)
-      addressable (~> 2.5.0)
+    imperium (0.5.2)
+      addressable (~> 2.5)
       httpclient (~> 2.8)
-    public_suffix (3.0.3)
+    public_suffix (4.0.7)
+    rake (12.3.3)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
       rspec-expectations (~> 3.8.0)
@@ -40,6 +41,7 @@ PLATFORMS
 
 DEPENDENCIES
   constancy!
+  rake (~> 12.0)
   rspec (~> 3.0)
 
 BUNDLED WITH