diff --git a/alm-server/Gemfile.lock b/alm-server/Gemfile.lock
index f53f161..1b7d39e 100644
--- a/alm-server/Gemfile.lock
+++ b/alm-server/Gemfile.lock
@@ -76,6 +76,7 @@ GEM
     minitest (4.7.5)
     multi_json (1.9.2)
     mysql2 (0.3.15)
+    nio4r (2.5.8)
     nokogiri (1.6.1)
       mini_portile (~> 0.5.0)
     parallel (0.9.2)
@@ -91,9 +92,9 @@ GEM
       pry (~> 0.9.10)
     pry-rails (0.3.2)
       pry (>= 0.9.10)
-    puma (2.8.1)
-      rack (>= 1.1, < 2.0)
-    rack (1.5.2)
+    puma (4.3.11)
+      nio4r (~> 2.0)
+    rack (1.5.5)
     rack-test (0.6.2)
       rack (>= 1.0)
     rails (4.0.3)