diff --git a/Gemfile b/Gemfile
index 03d3a45..8cf63af 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,7 +14,7 @@ end
 
 gem "code-scanning-rubocop", "~> 0.6.1"
 gem "debug", platform: :mri if RUBY_VERSION >= "3.1.0"
-gem "google-protobuf", "~> 4.27.3"
+gem "google-protobuf", "~> 4.28.0"
 gem "rake", "~> 13.2"
 gem "rubocop", "~> 1.65"
 gem "rubocop-changes", "~> 0.8.1"
diff --git a/Gemfile.lock b/Gemfile.lock
index 14d53ac..abb8133 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,10 +26,10 @@ GEM
     docile (1.4.0)
     drb (2.2.1)
     git_diff_parser (3.2.0)
-    google-protobuf (4.27.3-x86_64-darwin)
+    google-protobuf (4.28.0-x86_64-darwin)
       bigdecimal
       rake (>= 13)
-    google-protobuf (4.27.3-x86_64-linux)
+    google-protobuf (4.28.0-x86_64-linux)
       bigdecimal
       rake (>= 13)
     i18n (1.14.5)
@@ -138,7 +138,7 @@ DEPENDENCIES
   activesupport (< 8)
   code-scanning-rubocop (~> 0.6.1)
   debug
-  google-protobuf (~> 4.27.3)
+  google-protobuf (~> 4.28.0)
   rake (~> 13.2)
   rspec
   rubocop (~> 1.65)