diff --git a/Gemfile.lock b/Gemfile.lock
index 3fd741b44..5def1c7ff 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -366,7 +366,8 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    rexml (3.2.6)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rouge (4.2.0)
     rsolr (2.5.0)
       builder (>= 2.1.2)
@@ -431,6 +432,7 @@ GEM
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
     state_machines (0.6.0)
+    strscan (3.1.0)
     sunspot_matchers (2.2.5.0)
     sunspot_test (0.4.2)
       sunspot_rails (>= 2.1.1)