diff --git a/pom.xml b/pom.xml
index 45e7c3b..0be4ebd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -28,7 +28,7 @@
         <formatter-maven-plugin.version>2.24.1</formatter-maven-plugin.version>
         <impsort-maven-plugin.version>1.12.0</impsort-maven-plugin.version>
         <xml-format-maven-plugin>4.0.1</xml-format-maven-plugin>
-        <opentelemetry-proto.version>1.3.2-alpha</opentelemetry-proto.version>
+        <opentelemetry-proto.version>1.4.0-alpha</opentelemetry-proto.version>
         <!-- Test to be executed by default (should be all of them) -->
         <includeTags>generator,startstop,bomtests,codequarkus,special-chars</includeTags>
         <!-- Default values for format -->