diff --git a/Gemfile.lock b/Gemfile.lock
index 45e7574..1b5836a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -93,7 +93,7 @@ GEM
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     hash-deep-merge (0.1.1)
-    hashie (3.6.0)
+    hashie (5.0.0)
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
     io-like (0.3.0)
@@ -115,7 +115,9 @@ 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)
@@ -137,8 +139,8 @@ GEM
       rack (>= 1.2, < 3)
     octokit (4.14.0)
       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)
@@ -150,7 +152,7 @@ GEM
     pg (1.1.4-x64-mingw32)
     public_suffix (3.0.3)
     puma (3.12.1)
-    rack (2.0.6)
+    rack (2.2.4)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)