diff --git a/Gemfile.lock b/Gemfile.lock
index 123d437..ba054a2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -89,7 +89,7 @@ GEM
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     hashdiff (1.0.0)
-    hashie (3.6.0)
+    hashie (5.0.0)
     i18n (1.7.0)
       concurrent-ruby (~> 1.0)
     jbuilder (2.9.1)
@@ -129,8 +129,8 @@ GEM
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (>= 1.2, < 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)
@@ -145,7 +145,7 @@ GEM
     public_suffix (4.0.1)
     puma (4.3.8)
       nio4r (~> 2.0)
-    rack (2.0.8)
+    rack (2.2.4)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4)