diff --git a/Gemfile.lock b/Gemfile.lock
index b69fdbe..88b68c8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -76,8 +76,7 @@ GEM
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.3.3)
-      strscan
+    rexml (3.3.9)
     ritex (1.0.1)
     rouge (3.21.0)
     safe_yaml (1.0.5)
@@ -88,7 +87,6 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.7)
     sskatex (0.9.39)
       execjs (~> 2.7)
-    strscan (3.1.0)
     thread_safe (0.3.6)
     tzinfo (1.2.10)
       thread_safe (~> 0.1)