diff --git a/Gemfile.lock b/Gemfile.lock
index dcf7b8a6..b3dc16e2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -149,7 +149,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.1)
-    puma (4.3.0)
+    puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.0.7)
     rack-mini-profiler (1.1.3)