diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 079662f1..402dfa6b 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -10,7 +10,7 @@ maven-publish = "0.29.0"
 # - conformance/buf.gen.yaml
 # - src/test/resources/proto/buf.gen.imports.yaml
 # - src/test/resources/proto/buf.gen.noimports.yaml
-protobuf = "3.25.3"
+protobuf = "4.27.2"
 
 [libraries]
 assertj = { module = "org.assertj:assertj-core", version.ref = "assertj" }