diff --git a/Gemfile.lock b/Gemfile.lock
index 35dc33311..a7cd0f017 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -294,7 +294,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.3)
-    puma (4.3.1)
+    puma (4.3.3)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-test (1.1.0)