diff --git a/Gemfile.lock b/Gemfile.lock
index 51b42f06d..78e4ac344 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -494,7 +494,8 @@ GEM
       netrc (~> 0.8)
     reverse_markdown (2.1.1)
       nokogiri
-    rexml (3.2.6)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rqrcode (1.2.0)
       chunky_png (~> 1.0)
       rqrcode_core (~> 0.2)
@@ -597,6 +598,7 @@ GEM
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
     stringio (3.0.1)
+    strscan (3.1.0)
     sync (0.5.0)
     sys-filesystem (1.4.4)
       ffi (~> 1.1)