diff --git a/Gemfile.lock b/Gemfile.lock
index 7d52a83..a61825b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -171,7 +171,7 @@ GEM
       rails (>= 3.2.0)
     griddler-mailgun (1.0.3)
       griddler
-    hashie (3.6.0)
+    hashie (5.0.0)
     htmlentities (4.3.4)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
@@ -217,7 +217,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    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)
@@ -240,8 +242,8 @@ GEM
       rack (>= 1.2, < 3)
     octokit (4.13.0)
       sawyer (~> 0.8.0, >= 0.5.3)
-    omniauth (1.9.0)
-      hashie (>= 3.4.6, < 3.7.0)
+    omniauth (1.9.2)
+      hashie (>= 3.4.6)
       rack (>= 1.6.2, < 3)
     omniauth-github (1.3.0)
       omniauth (~> 1.5)
@@ -277,7 +279,7 @@ GEM
       pry (>= 0.10.4)
     public_suffix (3.0.3)
     puma (3.12.0)
-    rack (2.0.7)
+    rack (2.2.4)
     rack-attack (6.0.0)
       rack (>= 1.0, < 3)
     rack-protection (2.0.5)