diff --git a/Gemfile.lock b/Gemfile.lock
index 19d604b5..a90c1d11 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -166,7 +166,7 @@ GEM
     debug_inspector (0.0.3)
     deep_merge (1.2.1)
     diff-lcs (1.3)
-    docile (1.1.5)
+    docile (1.3.2)
     draper (3.1.0)
       actionpack (>= 5.0)
       activemodel (>= 5.0)
@@ -275,7 +275,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.6)
+    json (2.3.1)
     json-jwt (1.11.0)
       activesupport (>= 4.2)
       aes_key_wrap
@@ -482,11 +482,10 @@ GEM
       rack (~> 2.0)
       rack-protection (>= 1.5.0)
       redis (>= 3.3.5, < 4.2)
-    simplecov (0.10.0)
-      docile (~> 1.1.0)
-      json (~> 1.8)
-      simplecov-html (~> 0.10.0)
-    simplecov-html (0.10.0)
+    simplecov (0.19.1)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+    simplecov-html (0.12.3)
     sinatra (2.0.5)
       mustermann (~> 1.0)
       rack (~> 2.0)