diff --git a/opa-proto/build.gradle.kts b/opa-proto/build.gradle.kts
index a37e299d..592c4675 100644
--- a/opa-proto/build.gradle.kts
+++ b/opa-proto/build.gradle.kts
@@ -5,7 +5,7 @@ import org.gradle.process.ExecOperations
 
 plugins {
     `java-library`
-    id("com.google.protobuf") version "0.9.5"
+    id("com.google.protobuf") version "0.10.0"
 }
 
 repositories {
@@ -14,7 +14,7 @@ repositories {
 
 // protobuf-java 4.x is required: the vendored schemas use edition 2023, which
 // needs protoc >= 27 (the 4.27+ line) and a matching runtime.
-val protobufVersion = "4.29.3"
+val protobufVersion = "4.35.1"
 
 dependencies {
     api(project(":opa-evaluator"))
@@ -22,9 +22,9 @@ dependencies {
 
     testImplementation(project(":opa-jackson"))
     testImplementation("com.fasterxml.jackson.core:jackson-databind:2.22.1")
-    testImplementation("org.junit.jupiter:junit-jupiter:6.1.0")
-    testImplementation("org.junit.jupiter:junit-jupiter-params:6.1.0")
-    testRuntimeOnly("org.junit.platform:junit-platform-launcher:1.10.1")
+    testImplementation("org.junit.jupiter:junit-jupiter:6.1.2")
+    testImplementation("org.junit.jupiter:junit-jupiter-params:6.1.2")
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher:6.1.2")
     testImplementation("org.assertj:assertj-core:3.27.7")
 }