diff --git a/Gemfile.lock b/Gemfile.lock
index 27087ca..29dc3a8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -301,7 +301,7 @@ GEM
       actionpack (>= 5.2)
       railties (>= 5.2)
     retriable (3.1.2)
-    rexml (3.3.8)
+    rexml (3.3.9)
     rsolr (2.6.0)
       builder (>= 2.1.2)
       faraday (>= 0.9, < 3, != 2.0.0)