diff --git a/Gemfile.lock b/Gemfile.lock
index 60b1697..b37257c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -83,10 +83,10 @@ GEM
       tomlrb (~> 1.2)
     chef-validation (0.2.3)
       chef (>= 11.0.0)
-    chef-zero (14.0.11)
+    chef-zero (14.0.17)
       ffi-yajl (~> 2.2)
       hashie (>= 2.0, < 4.0)
-      mixlib-log (~> 2.0)
+      mixlib-log (>= 2.0, < 4.0)
       rack (~> 2.0, >= 2.0.6)
       uuidtools (~> 2.1)
     chefspec (7.3.2)
@@ -113,7 +113,7 @@ GEM
     fauxhai (6.7.0)
       net-ssh
     ffi (1.10.0)
-    ffi-yajl (2.3.1)
+    ffi-yajl (2.3.3)
       libyajl2 (~> 1.2)
     foodcritic (15.1.0)
       cucumber-core (>= 1.3, < 4.0)
@@ -255,7 +255,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.0.3)
-    rack (2.0.6)
+    rack (2.0.8)
     rainbow (3.0.0)
     rake (12.3.2)
     rb-fsevent (0.10.3)