diff --git a/dependencyManagement/build.gradle.kts b/dependencyManagement/build.gradle.kts
index ffe00976c..e6f03406d 100644
--- a/dependencyManagement/build.gradle.kts
+++ b/dependencyManagement/build.gradle.kts
@@ -55,6 +55,6 @@ dependencies {
 
     api("io.opentelemetry.contrib:opentelemetry-samplers:$otelContribAlphaVersion")
     api("io.opentelemetry.contrib:opentelemetry-resource-providers:$otelContribAlphaVersion")
-    api("io.opentelemetry.proto:opentelemetry-proto:1.3.2-alpha")
+    api("io.opentelemetry.proto:opentelemetry-proto:1.4.0-alpha")
   }
 }
diff --git a/smoke-tests/src/test/java/com/splunk/opentelemetry/TelemetryRetriever.java b/smoke-tests/src/test/java/com/splunk/opentelemetry/TelemetryRetriever.java
index 15df37937..92f39ba15 100644
--- a/smoke-tests/src/test/java/com/splunk/opentelemetry/TelemetryRetriever.java
+++ b/smoke-tests/src/test/java/com/splunk/opentelemetry/TelemetryRetriever.java
@@ -19,7 +19,7 @@
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
-import com.google.protobuf.GeneratedMessageV3;
+import com.google.protobuf.GeneratedMessage;
 import com.google.protobuf.InvalidProtocolBufferException;
 import com.google.protobuf.util.JsonFormat;
 import io.opentelemetry.proto.collector.logs.v1.ExportLogsServiceRequest;
@@ -95,7 +95,7 @@ private ExportLogsServiceRequest deserializeLogsRequest(JsonNode it) {
     return builder.build();
   }
 
-  private void deserializeIntoBuilder(JsonNode it, GeneratedMessageV3.Builder<?> builder) {
+  private void deserializeIntoBuilder(JsonNode it, GeneratedMessage.Builder<?> builder) {
     try {
       JsonFormat.parser().merge(OBJECT_MAPPER.writeValueAsString(it), builder);
     } catch (InvalidProtocolBufferException | JsonProcessingException e) {