diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index bb9a5cd..801efda 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,6 +1,6 @@
 [versions]
 grpc = "1.68.0"
-protobuf = "4.28.2"
+protobuf = "4.28.3"
 
 [libraries]
 protobuf = { module = "com.google.protobuf:protobuf-java", version.ref = "protobuf" }