diff --git a/Gemfile.lock b/Gemfile.lock
index cebc7cb..bbf9f45 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -83,7 +83,7 @@ GEM
     builder (3.3.0)
     byebug (12.0.0)
     concurrent-ruby (1.3.5)
-    config (5.5.2)
+    config (5.6.1)
       deep_merge (~> 1.2, >= 1.2.1)
       ostruct
     connection_pool (2.5.3)
@@ -92,7 +92,7 @@ GEM
     debug_inspector (1.2.0)
     deep_merge (1.2.2)
     drb (2.2.3)
-    erb (5.0.1)
+    erb (5.0.2)
     erubi (1.13.1)
     execjs (2.10.0)
     ffi (1.17.2-aarch64-linux-gnu)
@@ -108,7 +108,7 @@ GEM
     hashery (2.1.2)
     i18n (1.14.7)
       concurrent-ruby (~> 1.0)
-    io-console (0.8.0)
+    io-console (0.8.1)
     irb (1.15.2)
       pp (>= 0.6.0)
       rdoc (>= 4.0.0)
@@ -120,7 +120,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    jwt (2.10.1)
+    jwt (3.1.2)
       base64
     lockbox (1.3.3)
     logger (1.7.0)
@@ -136,7 +136,7 @@ GEM
     mini_mime (1.1.5)
     minitest (5.25.5)
     mysql2 (0.5.6)
-    net-imap (0.5.8)
+    net-imap (0.5.9)
       date
       net-protocol
     net-pop (0.1.2)
@@ -146,23 +146,23 @@ GEM
     net-smtp (0.5.1)
       net-protocol
     nio4r (2.7.4)
-    nokogiri (1.18.8-aarch64-linux-gnu)
+    nokogiri (1.18.9-aarch64-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.8-aarch64-linux-musl)
+    nokogiri (1.18.9-aarch64-linux-musl)
       racc (~> 1.4)
-    nokogiri (1.18.8-arm-linux-gnu)
+    nokogiri (1.18.9-arm-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.8-arm-linux-musl)
+    nokogiri (1.18.9-arm-linux-musl)
       racc (~> 1.4)
-    nokogiri (1.18.8-arm64-darwin)
+    nokogiri (1.18.9-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.18.8-x86_64-darwin)
+    nokogiri (1.18.9-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.18.8-x86_64-linux-gnu)
+    nokogiri (1.18.9-x86_64-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.8-x86_64-linux-musl)
+    nokogiri (1.18.9-x86_64-linux-musl)
       racc (~> 1.4)
-    ostruct (0.6.1)
+    ostruct (0.6.3)
     pdf-reader (2.14.1)
       Ascii85 (>= 1.0, < 3.0, != 2.0.0)
       afm (~> 0.2.1)
@@ -217,10 +217,10 @@ GEM
       thor (~> 1.0, >= 1.2.2)
       zeitwerk (~> 2.6)
     rake (13.3.0)
-    rdoc (6.14.0)
+    rdoc (6.14.2)
       erb
       psych (>= 4.0.0)
-    reline (0.6.1)
+    reline (0.6.2)
       io-console (~> 0.5)
     ruby-rc4 (0.1.5)
     sassc (2.4.0)
@@ -243,17 +243,17 @@ GEM
       actionpack (>= 6.1)
       activesupport (>= 6.1)
       sprockets (>= 3.0.0)
-    sqlite3 (2.6.0-aarch64-linux-gnu)
-    sqlite3 (2.6.0-aarch64-linux-musl)
-    sqlite3 (2.6.0-arm-linux-gnu)
-    sqlite3 (2.6.0-arm-linux-musl)
-    sqlite3 (2.6.0-arm64-darwin)
-    sqlite3 (2.6.0-x86_64-darwin)
-    sqlite3 (2.6.0-x86_64-linux-gnu)
-    sqlite3 (2.6.0-x86_64-linux-musl)
+    sqlite3 (2.7.3-aarch64-linux-gnu)
+    sqlite3 (2.7.3-aarch64-linux-musl)
+    sqlite3 (2.7.3-arm-linux-gnu)
+    sqlite3 (2.7.3-arm-linux-musl)
+    sqlite3 (2.7.3-arm64-darwin)
+    sqlite3 (2.7.3-x86_64-darwin)
+    sqlite3 (2.7.3-x86_64-linux-gnu)
+    sqlite3 (2.7.3-x86_64-linux-musl)
     stringio (3.1.7)
-    thor (1.3.2)
-    tilt (2.6.0)
+    thor (1.4.0)
+    tilt (2.6.1)
     timeout (0.4.3)
     ttfunk (1.8.0)
       bigdecimal (~> 3.1)
diff --git a/app/controllers/version_controller.rb b/app/controllers/version_controller.rb
index 7c86bcb..ad35da4 100644
--- a/app/controllers/version_controller.rb
+++ b/app/controllers/version_controller.rb
@@ -3,7 +3,7 @@ class VersionController < ApplicationController
 
   # GET /version
   def version
-    version = '1.5.20'
+    version = '1.5.21'
     json_response(version: version)
   end
 end