diff --git a/Gemfile.lock b/Gemfile.lock
index a8c492c40..5c78c3e85 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -102,7 +102,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     non-stupid-digest-assets (1.0.9)
       sprockets (>= 2.0)
-    puma (4.3.1)
+    puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.1.2)
     rack-cors (1.1.1)