diff --git a/Gemfile b/Gemfile
index 5bb386a80..1690f92df 100644
--- a/Gemfile
+++ b/Gemfile
@@ -16,7 +16,7 @@ gem 'hamlit-rails', '~> 0.2'
 gem 'pg', '~> 1.4'
 gem 'makara', '~> 0.5'
 gem 'pghero', '~> 2.8'
-gem 'dotenv-rails', '~> 2.7'
+gem 'dotenv-rails', '~> 2.8'
 
 gem 'aws-sdk-s3', '~> 1.114', require: false
 gem 'fog-core', '<= 2.1.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index ad99e3909..a37486aaa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -200,9 +200,9 @@ GEM
       unf (>= 0.0.5, < 1.0.0)
     doorkeeper (5.5.4)
       railties (>= 5)
-    dotenv (2.7.6)
-    dotenv-rails (2.7.6)
-      dotenv (= 2.7.6)
+    dotenv (2.8.1)
+    dotenv-rails (2.8.1)
+      dotenv (= 2.8.1)
       railties (>= 3.2)
     ed25519 (1.3.0)
     elasticsearch (7.13.3)
@@ -396,7 +396,7 @@ GEM
     mime-types-data (3.2022.0105)
     mini_mime (1.1.2)
     mini_portile2 (2.8.0)
-    minitest (5.16.0)
+    minitest (5.16.2)
     msgpack (1.5.4)
     multi_json (1.15.0)
     multipart-post (2.1.1)
@@ -488,8 +488,8 @@ GEM
       rack (>= 2.1.0)
     rack-proxy (0.7.0)
       rack
-    rack-test (1.1.0)
-      rack (>= 1.0, < 3)
+    rack-test (2.0.2)
+      rack (>= 1.3)
     rails (6.1.6)
       actioncable (= 6.1.6)
       actionmailbox (= 6.1.6)
@@ -671,7 +671,7 @@ GEM
     twitter-text (3.1.0)
       idn-ruby
       unf (~> 0.1.0)
-    tzinfo (2.0.4)
+    tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
     tzinfo-data (1.2022.1)
       tzinfo (>= 1.0.0)
@@ -756,7 +756,7 @@ DEPENDENCIES
   devise_pam_authenticatable2 (~> 9.2)
   discard (~> 1.2)
   doorkeeper (~> 5.5)
-  dotenv-rails (~> 2.7)
+  dotenv-rails (~> 2.8)
   ed25519 (~> 1.3)
   fabrication (~> 2.30)
   faker (~> 2.22)