diff --git a/Gemfile.lock b/Gemfile.lock
index f0f9590..77abd5f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -130,7 +130,7 @@ GEM
       racc (~> 1.4)
     pg (1.2.3)
     public_suffix (4.0.6)
-    puma (4.3.9)
+    puma (4.3.11)
       nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.3)