diff --git a/Gemfile.lock b/Gemfile.lock
index 55ecef463..23a706276 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -542,7 +542,7 @@ GEM
     rake (13.0.6)
     rdf (3.2.9)
       link_header (~> 0.0, >= 0.0.8)
-    rdf-normalize (0.5.0)
+    rdf-normalize (0.5.1)
       rdf (~> 3.2)
     redcarpet (3.5.1)
     redis (4.5.1)