diff --git a/Gemfile.lock b/Gemfile.lock
index 44cbd306a..a0bb4ed94 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -200,10 +200,10 @@ GEM
     docile (1.3.2)
     domino (0.7.0)
       capybara (>= 0.4.0)
-    dragonfly (1.0.7)
+    dragonfly (1.4.0)
       addressable (~> 2.3)
       multi_json (~> 1.0)
-      rack
+      rack (>= 1.3)
     dragonfly-s3_data_store (1.0.4)
       dragonfly (~> 1.0)
       fog
@@ -458,7 +458,7 @@ GEM
     minitest (5.14.0)
     moneta (0.8.1)
     msgpack (1.3.3)
-    multi_json (1.14.1)
+    multi_json (1.15.0)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
     mustermann (1.1.1)
@@ -533,7 +533,7 @@ GEM
     pry-remote (0.1.8)
       pry (~> 0.9)
       slop (~> 3.0)
-    public_suffix (4.0.3)
+    public_suffix (4.0.6)
     puma (3.12.6)
     pundit (1.1.0)
       activesupport (>= 3.0.0)