diff --git a/Gemfile b/Gemfile
index 93cced5..5bbd95c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,7 +14,7 @@ gem "rails",        "6.0.3.1"
 gem "bootsnap",     "1.4.6"
 gem "jbuilder",     "2.10.0"
 gem "pg",           "1.2.3"
-gem "puma",         "4.3.8"
+gem "puma",         "4.3.12"
 gem "rack-cors",    "1.1.1"
 gem "redis",        "4.1.3"
 gem "sass-rails",   "6.0.0"
diff --git a/Gemfile.lock b/Gemfile.lock
index dcf1533..8b6db18 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -103,7 +103,7 @@ GEM
     mini_portile2 (2.5.1)
     minitest (5.14.1)
     msgpack (1.3.3)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.11.5)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
@@ -112,7 +112,7 @@ GEM
       ast (~> 2.4.0)
     pg (1.2.3)
     public_suffix (4.0.5)
-    puma (4.3.8)
+    puma (4.3.12)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -232,7 +232,7 @@ DEPENDENCIES
   jbuilder (= 2.10.0)
   listen (>= 3.0.5, < 3.2)
   pg (= 1.2.3)
-  puma (= 4.3.8)
+  puma (= 4.3.12)
   rack-cors (= 1.1.1)
   rails (= 6.0.3.1)
   redis (= 4.1.3)