diff --git a/Gemfile.lock b/Gemfile.lock
index 3c5aa68..3297b52 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,11 +12,11 @@ GEM
       minitest (>= 5.1)
       tzinfo (~> 2.0)
       zeitwerk (~> 2.3)
-    addressable (2.7.0)
+    addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
     amazing_print (1.3.0)
     coderay (1.1.3)
-    concurrent-ruby (1.1.8)
+    concurrent-ruby (1.1.9)
     crack (0.4.5)
       rexml
     deep_merge (1.2.1)
@@ -48,7 +48,7 @@ GEM
       method_source (~> 1.0)
     public_suffix (4.0.6)
     racc (1.5.2)
-    rdf (3.1.14)
+    rdf (3.1.15)
       hamster (~> 3.0)
       link_header (~> 0.0, >= 0.0.8)
     rdf-turtle (3.1.3)