diff --git a/10xengineer-node.gemspec b/10xengineer-node.gemspec
index 7f247ab..b8dc6e6 100644
--- a/10xengineer-node.gemspec
+++ b/10xengineer-node.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |gem|
   gem.add_dependency "net-ssh", "~> 2.3.0"
   gem.add_dependency "uuid", "~> 2.3.5"
   gem.add_dependency "open4", "~> 1.3.0"
-  gem.add_dependency "yajl-ruby", "~> 1.1.0"
+  gem.add_dependency "yajl-ruby", ">= 1.1", "< 1.5"
   gem.add_dependency "httparty", "~> 0.8.3"
   gem.add_dependency "zfs", "~> 0.1.1"
   gem.add_dependency "mixlib-shellout", "~> 1.1.0"
diff --git a/Gemfile.lock b/Gemfile.lock
index e3a5018..8f0cbe3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,30 +10,30 @@ PATH
       net-ssh (~> 2.3.0)
       open4 (~> 1.3.0)
       uuid (~> 2.3.5)
-      yajl-ruby (~> 1.1.0)
+      yajl-ruby (>= 1.1, < 1.5)
       zfs (~> 0.1.1)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    commander (4.1.2)
+    commander (4.1.6)
       highline (~> 1.6.11)
     diff-lcs (1.1.3)
     erubis (2.7.0)
-    highline (1.6.15)
+    highline (1.6.21)
     httparty (0.8.3)
       multi_json (~> 1.0)
       multi_xml
     human_size_to_number (1.0.1)
       rake
-    macaddr (1.6.1)
-      systemu (~> 2.5.0)
+    macaddr (1.7.2)
+      systemu (~> 2.6.5)
     mixlib-shellout (1.1.0)
     multi_json (1.3.6)
-    multi_xml (0.5.1)
+    multi_xml (0.6.0)
     net-ssh (2.3.0)
-    open4 (1.3.0)
-    rake (10.0.2)
+    open4 (1.3.4)
+    rake (13.0.6)
     rspec (2.10.0)
       rspec-core (~> 2.10.0)
       rspec-expectations (~> 2.10.0)
@@ -48,10 +48,10 @@ GEM
     simplecov-html (0.5.3)
     simplecov-rcov (0.2.3)
       simplecov (>= 0.4.1)
-    systemu (2.5.2)
-    uuid (2.3.6)
+    systemu (2.6.5)
+    uuid (2.3.9)
       macaddr (~> 1.0)
-    yajl-ruby (1.1.0)
+    yajl-ruby (1.4.3)
     zfs (0.1.1)
 
 PLATFORMS