diff --git a/Gemfile.lock b/Gemfile.lock
index eaffea9..a7fbb20 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -126,7 +126,7 @@ GEM
       eventmachine (= 1.0.9)
       ffi
     public_suffix (3.1.1)
-    puma (4.3.2)
+    puma (4.3.3)
       nio4r (~> 2.0)
     rack (2.0.8)
     rack-test (1.1.0)