diff --git a/Gemfile.lock b/Gemfile.lock
index ba88b2e..c4ae62a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -137,8 +137,7 @@ GEM
       trailblazer-option (>= 0.1.1, < 0.2.0)
       uber (< 0.2.0)
     retriable (3.1.2)
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
+    rexml (3.3.9)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -186,7 +185,6 @@ GEM
       faraday (>= 0.17.5, < 3.a)
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
-    strscan (3.1.0)
     time (0.2.2)
       date
     timeout (0.3.2)