diff --git a/Gemfile.lock b/Gemfile.lock
index 1d0d48a29..11631c9e1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -178,7 +178,7 @@ GEM
       guard (~> 2.0)
       rubocop (~> 0.20)
     hashdiff (0.3.8)
-    hashie (3.6.0)
+    hashie (5.0.0)
     hashie-forbidden_attributes (0.1.1)
       hashie (>= 3.0)
     hirb (0.7.3)
@@ -223,7 +223,9 @@ 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)
@@ -250,8 +252,8 @@ GEM
       rack (>= 1.2, < 3)
     octokit (2.0.0)
       sawyer (~> 0.3.0)
-    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)
@@ -311,7 +313,7 @@ GEM
     puma (3.12.1)
     pundit (2.0.1)
       activesupport (>= 3.0.0)
-    rack (2.0.7)
+    rack (2.2.4)
     rack-accept (0.4.5)
       rack (>= 0.4)
     rack-cors (1.0.3)