diff --git a/Gemfile.lock b/Gemfile.lock
index 4645ea74a..fc4d6cbdb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,8 +97,7 @@ GEM
     open4 (1.3.4)
     public_suffix (4.0.7)
     redcarpet (3.6.0)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rouge (4.2.0)
     ruby-macho (2.5.1)
     ruby2_keywords (0.0.5)
@@ -106,7 +105,6 @@ GEM
       ffi (~> 1.9)
     sqlite3 (1.6.9)
       mini_portile2 (~> 2.8.0)
-    strscan (3.1.0)
     typhoeus (1.4.1)
       ethon (>= 0.9.0)
     tzinfo (2.0.6)