diff --git a/Gemfile.lock b/Gemfile.lock
index 441aaba..63a6a2d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -274,7 +274,8 @@ GEM
       actionpack (>= 5.2)
       railties (>= 5.2)
     retriable (3.1.2)
-    rexml (3.2.6)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rsolr (2.5.0)
       builder (>= 2.1.2)
       faraday (>= 0.9, < 3, != 2.0.0)
@@ -327,6 +328,7 @@ GEM
     sqlite3 (1.7.2)
       mini_portile2 (~> 2.8.0)
     stringio (3.1.0)
+    strscan (3.1.0)
     thor (1.3.1)
     tilt (2.3.0)
     timeout (0.4.1)