diff --git a/Gemfile.lock b/Gemfile.lock
index 1d03db9e..1e3daa64 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -385,8 +385,7 @@ GEM
     responders (3.1.1)
       actionpack (>= 5.2)
       railties (>= 5.2)
-    rexml (3.3.3)
-      strscan
+    rexml (3.3.9)
     rouge (4.2.1)
     rsolr (2.6.0)
       builder (>= 2.1.2)
@@ -490,7 +489,6 @@ GEM
       mini_portile2 (~> 2.8.0)
     stackprof (0.2.26)
     stringio (3.1.1)
-    strscan (3.1.0)
     thor (1.3.1)
     tilt (2.4.0)
     timeout (0.4.1)