diff --git a/Gemfile.lock b/Gemfile.lock
index c2db7f794..99a3c9e5f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -149,7 +149,7 @@ GEM
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     hashdiff (0.3.7)
-    hashie (3.5.7)
+    hashie (5.0.0)
     i18n (1.0.1)
       concurrent-ruby (~> 1.0)
     i18n_data (0.8.0)
@@ -187,7 +187,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -210,8 +212,8 @@ GEM
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (>= 1.2, < 3)
-    omniauth (1.8.1)
-      hashie (>= 3.4.6, < 3.6.0)
+    omniauth (1.9.2)
+      hashie (>= 3.4.6)
       rack (>= 1.6.2, < 3)
     omniauth-github (1.3.0)
       omniauth (~> 1.5)
@@ -239,7 +241,7 @@ GEM
     pry-rails (0.3.9)
       pry (>= 0.10.4)
     puma (3.11.4)
-    rack (2.0.8)
+    rack (2.2.4)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)