diff --git a/Gemfile.lock b/Gemfile.lock
index 15d64c842..643452963 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -970,8 +970,7 @@ GEM
     retriable (3.1.2)
     reverse_markdown (2.1.1)
       nokogiri
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     riiif (2.5.0)
       deprecation (>= 1.0.0)
       iiif-image-api (>= 0.1.0)
@@ -1149,7 +1148,6 @@ GEM
     sshkit-interactive (0.3.0)
       sshkit (~> 1.12)
     string_rtl (0.1.0)
-    strscan (3.1.0)
     sxp (1.3.0)
       matrix (~> 0.4)
       rdf (~> 3.3)