diff --git a/README.md b/README.md
index b6a12a028..390f39ff1 100644
--- a/README.md
+++ b/README.md
@@ -22,20 +22,20 @@ If you are using Maven, add this to your pom.xml file:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-logging-logback</artifactId>
-  <version>0.128.0-alpha</version>
+  <version>0.129.0-alpha</version>
 </dependency>
 ```
 
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-logging-logback:0.128.0-alpha'
+implementation 'com.google.cloud:google-cloud-logging-logback:0.129.0-alpha'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-logging-logback" % "0.128.0-alpha"
+libraryDependencies += "com.google.cloud" % "google-cloud-logging-logback" % "0.129.0-alpha"
 ```
 
 ## Authentication
diff --git a/src/main/java/com/google/cloud/logging/logback/LoggingAppender.java b/src/main/java/com/google/cloud/logging/logback/LoggingAppender.java
index 427af9a5a..a72ab18dc 100644
--- a/src/main/java/com/google/cloud/logging/logback/LoggingAppender.java
+++ b/src/main/java/com/google/cloud/logging/logback/LoggingAppender.java
@@ -104,7 +104,10 @@ public class LoggingAppender extends UnsynchronizedAppenderBase<ILoggingEvent> {
   private static final List<LoggingEventEnhancer> DEFAULT_LOGGING_EVENT_ENHANCERS =
       ImmutableList.<LoggingEventEnhancer>of(new MDCEventEnhancer());
   public static final String JAVA_LOGBACK_LIBRARY_NAME = "java-logback";
-  // {x-version-update:google-cloud-logging-logback:current}
+  // Using release-please annotations to update DEFAULT_INSTRUMENTATION_VERSION with latest version.
+  // See
+  // https://github.com/googleapis/release-please/blob/main/docs/customizing.md#updating-arbitrary-files
+  // {x-version-update-start:google-cloud-logging-logback:current}
   public static final String DEFAULT_INSTRUMENTATION_VERSION = "1.0.0";
   // {x-version-update-end}
   private static boolean instrumentationAdded = false;
@@ -348,7 +351,7 @@ protected void append(ILoggingEvent e) {
     if (!setInstrumentationStatus(true)) {
       entriesList.add(
           Instrumentation.createDiagnosticEntry(
-              JAVA_LOGBACK_LIBRARY_NAME, Instrumentation.getLibraryVersion(LoggingAppender.class)));
+              JAVA_LOGBACK_LIBRARY_NAME, DEFAULT_INSTRUMENTATION_VERSION));
     }
     Iterable<LogEntry> entries = entriesList;
     if (autoPopulateMetadata) {