diff --git a/telemetry-testing/build.gradle.kts b/telemetry-testing/build.gradle.kts
index 28b5157db..3245a3bdc 100644
--- a/telemetry-testing/build.gradle.kts
+++ b/telemetry-testing/build.gradle.kts
@@ -33,7 +33,7 @@ dependencies {
     testImplementation("org.junit.jupiter:junit-jupiter-engine")
     testImplementation("org.mock-server:mockserver-netty:5.15.0")
     testImplementation("org.awaitility:awaitility:4.2.2")
-    testImplementation("io.opentelemetry.proto:opentelemetry-proto:1.4.0-alpha")
+    testImplementation("io.opentelemetry.proto:opentelemetry-proto:1.5.0-alpha")
     testImplementation("org.assertj:assertj-core:3.27.2")
 
     agent("io.opentelemetry.javaagent:opentelemetry-javaagent:2.11.0")