diff --git a/Gemfile b/Gemfile
index 0c0674b..32c6730 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ ruby "2.6.5"
 # base gems
 gem "rails", "~> 6.0.2", ">= 6.0.2.1"
 gem "pg", ">= 0.18", "< 2.0"
-gem "puma", "~> 4.1"
+gem "puma", "~> 4.3"
 gem "webpacker", "~> 4.0"
 
 # uploads
diff --git a/Gemfile.lock b/Gemfile.lock
index fd1db2c..2b82620 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1145,7 +1145,7 @@ GEM
     pg (1.2.0)
     possessive (1.0.1)
     public_suffix (4.0.2)
-    puma (4.3.1)
+    puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.0.8)
     rack-protection (2.0.8.1)
@@ -1323,7 +1323,7 @@ DEPENDENCIES
   omniauth-twitter (~> 1.4)
   pg (>= 0.18, < 2.0)
   possessive (~> 1.0)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.2, >= 6.0.2.1)
   rails-patterns (~> 0.6.0)
   rubocop (~> 0.78.0)