diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index 8747bf7329..13234f4499 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -22,7 +22,7 @@
     <maven.compiler.source>1.8</maven.compiler.source>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <opencensus.version>0.31.1</opencensus.version>
-    <trace.version>2.3.7</trace.version>
+    <trace.version>2.4.0</trace.version>
     <cloudmonitoring.version>3.5.0</cloudmonitoring.version>
   </properties>
 
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 8436787844..2e660da4a4 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -22,7 +22,7 @@
     <maven.compiler.source>1.8</maven.compiler.source>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <opencensus.version>0.31.1</opencensus.version>
-    <trace.version>2.3.7</trace.version>
+    <trace.version>2.4.0</trace.version>
     <cloudmonitoring.version>3.5.0</cloudmonitoring.version>
   </properties>