diff --git a/Gemfile.lock b/Gemfile.lock
index 059674d..b5641bf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,7 +44,8 @@ GEM
       sawyer (~> 0.9)
     public_suffix (5.0.1)
     rchardet (1.8.0)
-    rexml (3.2.5)
+    rexml (3.2.7)
+      strscan (>= 3.0.9)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -63,6 +64,7 @@ GEM
     sawyer (0.9.2)
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
+    strscan (3.1.0)
     thor (1.2.1)
 
 PLATFORMS