diff --git a/Gemfile b/Gemfile
index c38cede758d6be4adf3b19e73bbd646b6a778b6a..d6037d8706719468b764a88ecc82085027f402f3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -76,7 +76,7 @@ gem "github-markup", "~> 0.7.4", require: 'github/markup'
 gem  "asciidoctor"
 
 # Servers
-gem "puma", '~> 2.1.1'
+gem "puma", '~> 2.3.0'
 
 # State machine
 gem "state_machine"
diff --git a/Gemfile.lock b/Gemfile.lock
index 369be882e14ef4976b44fbc0c45e1264a8264d38..c0cc4cf415be3588599d889f7e12df2a77ed6f9b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -306,7 +306,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.4)
-    puma (2.1.1)
+    puma (2.3.0)
       rack (>= 1.1, < 2.0)
     pygments.rb (0.4.2)
       posix-spawn (~> 0.3.6)
@@ -576,7 +576,7 @@ DEPENDENCIES
   pg
   poltergeist (~> 1.3.0)
   pry
-  puma (~> 2.1.1)
+  puma (~> 2.3.0)
   quiet_assets (~> 1.0.1)
   rack-mini-profiler
   rails (= 3.2.13)