diff --git a/Gemfile.lock b/Gemfile.lock
index 96353883..ff3c6abd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -62,9 +62,10 @@ GEM
       activesupport (>= 3.0.0)
       rdf (~> 2.0, >= 2.0.2)
       rdf-vocab
-    active_attr (0.10.3)
-      activemodel (>= 3.0.2, < 6.0)
-      activesupport (>= 3.0.2, < 6.0)
+    active_attr (0.15.4)
+      actionpack (>= 3.0.2, < 7.1)
+      activemodel (>= 3.0.2, < 7.1)
+      activesupport (>= 3.0.2, < 7.1)
     active_encode (0.1.1)
       activesupport
     active_fedora-noid (2.0.2)
@@ -201,7 +202,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     commonjs (0.2.7)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.10)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     crass (1.0.4)
@@ -384,7 +385,7 @@ GEM
       hydra-file_characterization (~> 0.3, >= 0.3.3)
       hydra-pcdm (>= 0.9)
       om (~> 3.1)
-    i18n (1.0.1)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     ice_nine (0.11.2)
     iiif-image-api (0.1.0)
@@ -489,7 +490,7 @@ GEM
     mini_magick (4.9.5)
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
-    minitest (5.11.3)
+    minitest (5.16.3)
     mods (2.0.3)
       iso-639
       nokogiri
@@ -822,7 +823,7 @@ GEM
       actionpack (>= 3.1)
       jquery-rails
       railties (>= 3.1)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uber (0.1.0)
     uglifier (3.2.0)