diff --git a/pom.xml b/pom.xml
index bb7eb21..0eb1a44 100644
--- a/pom.xml
+++ b/pom.xml
@@ -48,7 +48,7 @@
 		<dependency>
 			<groupId>io.opentelemetry.proto</groupId>
 			<artifactId>opentelemetry-proto</artifactId>
-			<version>1.4.0-alpha</version>
+			<version>1.9.0-alpha</version>
 		</dependency>
 		<dependency>
 			<groupId>com.google.protobuf</groupId>