diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index ef7fd2af21..a3e41ba9b4 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>2.3.0</trace.version>
+    <trace.version>2.3.1</trace.version>
     <cloudmonitoring.version>3.3.6</cloudmonitoring.version>
   </properties>
 
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 9852a1aa03..889b9e9a43 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>2.3.0</trace.version>
+    <trace.version>2.3.1</trace.version>
     <cloudmonitoring.version>3.3.6</cloudmonitoring.version>
   </properties>