diff --git a/.github/workflows/update_generation_config.yaml b/.github/workflows/update_generation_config.yaml
index 59e39834d..a7e14bb48 100644
--- a/.github/workflows/update_generation_config.yaml
+++ b/.github/workflows/update_generation_config.yaml
@@ -26,7 +26,7 @@ jobs:
       # the branch into which the pull request is merged
       base_branch: main
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
         token: ${{ secrets.CLOUD_JAVA_BOT_TOKEN }}
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index e273f3219..9be00fa1c 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.143.1"
+  ".": "1.144.0"
 }
diff --git a/README.md b/README.md
index b0672bc00..c75174913 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file:
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>libraries-bom</artifactId>
-      <version>26.71.0</version>
+      <version>26.72.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>
@@ -43,7 +43,7 @@ If you are using Maven without the BOM, add this to your dependencies:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-pubsub</artifactId>
-  <version>1.143.0</version>
+  <version>1.143.1</version>
 </dependency>
 
 ```
@@ -58,13 +58,13 @@ implementation 'com.google.cloud:google-cloud-pubsub'
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-pubsub:1.143.1'
+implementation 'com.google.cloud:google-cloud-pubsub:1.144.0'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-pubsub" % "1.143.1"
+libraryDependencies += "com.google.cloud" % "google-cloud-pubsub" % "1.144.0"
 ```
 
 ## Authentication
@@ -420,7 +420,7 @@ Java is a registered trademark of Oracle and/or its affiliates.
 [kokoro-badge-link-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-pubsub/java11.html
 [stability-image]: https://img.shields.io/badge/stability-stable-green
 [maven-version-image]: https://img.shields.io/maven-central/v/com.google.cloud/google-cloud-pubsub.svg
-[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-pubsub/1.143.1
+[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-pubsub/1.144.0
 [authentication]: https://github.com/googleapis/google-cloud-java#authentication
 [auth-scopes]: https://developers.google.com/identity/protocols/oauth2/scopes
 [predefined-iam-roles]: https://cloud.google.com/iam/docs/understanding-roles#predefined_roles
diff --git a/google-cloud-pubsub-bom/pom.xml b/google-cloud-pubsub-bom/pom.xml
index 5281720c5..3b9fcbb54 100644
--- a/google-cloud-pubsub-bom/pom.xml
+++ b/google-cloud-pubsub-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-pubsub-bom</artifactId>
-  <version>1.143.1</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+  <version>1.144.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -52,17 +52,17 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-pubsub</artifactId>
-        <version>1.143.1</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+        <version>1.144.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-pubsub-v1</artifactId>
-        <version>1.125.1</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
+        <version>1.126.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-pubsub-v1</artifactId>
-        <version>1.125.1</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
+        <version>1.126.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-pubsub/pom.xml b/google-cloud-pubsub/pom.xml
index 8d31ef029..977a7250e 100644
--- a/google-cloud-pubsub/pom.xml
+++ b/google-cloud-pubsub/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-pubsub</artifactId>
-  <version>1.143.1</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+  <version>1.144.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Pub/Sub</name>
   <url>https://github.com/googleapis/java-pubsub</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-pubsub-parent</artifactId>
-    <version>1.143.1</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+    <version>1.144.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-pubsub</site.installationModule>
diff --git a/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/Subscriber.java b/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/Subscriber.java
index ce9bc6f15..a2d4f3b38 100644
--- a/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/Subscriber.java
+++ b/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/Subscriber.java
@@ -144,7 +144,7 @@ public class Subscriber extends AbstractApiService implements SubscriberInterfac
   private final boolean maxDurationPerAckExtensionDefaultUsed;
   private final java.time.Duration minDurationPerAckExtension;
   private final boolean minDurationPerAckExtensionDefaultUsed;
-  private final long protocolVersion;
+  private final long protocolVersion = 1L;
 
   // The ExecutorProvider used to generate executors for processing messages.
   private final ExecutorProvider executorProvider;
@@ -183,7 +183,6 @@ private Subscriber(Builder builder) {
     maxDurationPerAckExtensionDefaultUsed = builder.maxDurationPerAckExtensionDefaultUsed;
     minDurationPerAckExtension = builder.minDurationPerAckExtension;
     minDurationPerAckExtensionDefaultUsed = builder.minDurationPerAckExtensionDefaultUsed;
-    protocolVersion = builder.protocolVersion;
 
     clock = builder.clock.isPresent() ? builder.clock.get() : CurrentMillisClock.getDefaultClock();
 
@@ -551,8 +550,6 @@ public static final class Builder {
     private boolean enableOpenTelemetryTracing = false;
     private OpenTelemetry openTelemetry = null;
 
-    private long protocolVersion = 0L;
-
     private SubscriberShutdownSettings subscriberShutdownSettings =
         SubscriberShutdownSettings.newBuilder().build();
 
@@ -776,12 +773,6 @@ Builder setClock(ApiClock clock) {
       return this;
     }
 
-    /** Gives the ability to override the protocol version */
-    public Builder setProtocolVersion(long protocolVersion) {
-      this.protocolVersion = protocolVersion;
-      return this;
-    }
-
     /**
      * OpenTelemetry will be enabled if setEnableOpenTelemetry is true and and instance of
      * OpenTelemetry has been provied. Warning: traces are subject to change. The name and
diff --git a/grpc-google-cloud-pubsub-v1/pom.xml b/grpc-google-cloud-pubsub-v1/pom.xml
index fd03db4db..29b3dd9e0 100644
--- a/grpc-google-cloud-pubsub-v1/pom.xml
+++ b/grpc-google-cloud-pubsub-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-pubsub-v1</artifactId>
-  <version>1.125.1</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
+  <version>1.126.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
   <name>grpc-google-cloud-pubsub-v1</name>
   <description>GRPC library for grpc-google-cloud-pubsub-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-pubsub-parent</artifactId>
-    <version>1.143.1</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+    <version>1.144.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index f5fd9874d..14d6127ea 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-pubsub-parent</artifactId>
   <packaging>pom</packaging>
-  <version>1.143.1</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+  <version>1.144.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   <name>Google Cloud Pub/Sub Parent</name>
   <url>https://github.com/googleapis/java-pubsub</url>
   <description>
@@ -69,17 +69,17 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-pubsub-v1</artifactId>
-        <version>1.125.1</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
+        <version>1.126.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-pubsub-v1</artifactId>
-        <version>1.125.1</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
+        <version>1.126.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-pubsub</artifactId>
-        <version>1.143.1</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+        <version>1.144.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
       </dependency>
 
       <!-- Test dependencies -->
diff --git a/proto-google-cloud-pubsub-v1/pom.xml b/proto-google-cloud-pubsub-v1/pom.xml
index 012ad1784..4918ef569 100644
--- a/proto-google-cloud-pubsub-v1/pom.xml
+++ b/proto-google-cloud-pubsub-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-pubsub-v1</artifactId>
-  <version>1.125.1</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
+  <version>1.126.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
   <name>proto-google-cloud-pubsub-v1</name>
   <description>PROTO library for proto-google-cloud-pubsub-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-pubsub-parent</artifactId>
-    <version>1.143.1</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+    <version>1.144.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index ed71217f5..2bdf5dfa8 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -75,12 +75,12 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>4.33.1</version>
+      <version>4.33.2</version>
     </dependency>
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.62.1</version>
+      <version>2.62.2</version>
       <classifier>tests</classifier>
     </dependency>
     <dependency>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index addbfc8a2..fa602649f 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -43,7 +43,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-pubsub</artifactId>
-      <version>1.143.1</version>
+      <version>1.144.1-SNAPSHOT</version>
     </dependency>
     <!-- {x-version-update-end} -->
 
@@ -61,7 +61,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>4.33.1</version>
+      <version>4.33.2</version>
     </dependency>
 
     <dependency>
@@ -79,7 +79,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.62.1</version>
+      <version>2.62.2</version>
       <classifier>tests</classifier>
     </dependency>
     <dependency>
diff --git a/samples/snippets/pom.xml b/samples/snippets/pom.xml
index 6441845bd..a80f9af05 100644
--- a/samples/snippets/pom.xml
+++ b/samples/snippets/pom.xml
@@ -45,7 +45,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>26.71.0</version>
+        <version>26.72.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
@@ -85,7 +85,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>4.33.1</version>
+      <version>4.33.2</version>
     </dependency>
 
     <dependency>
@@ -103,7 +103,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.62.1</version>
+      <version>2.62.2</version>
       <classifier>tests</classifier>
     </dependency>
     <!-- [END_EXCLUDE] -->
diff --git a/versions.txt b/versions.txt
index e51f1f34a..7667c2b45 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,6 +1,6 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-pubsub:1.143.1:1.143.1
-grpc-google-cloud-pubsub-v1:1.125.1:1.125.1
-proto-google-cloud-pubsub-v1:1.125.1:1.125.1
+google-cloud-pubsub:1.144.0:1.144.1-SNAPSHOT
+grpc-google-cloud-pubsub-v1:1.126.0:1.126.1-SNAPSHOT
+proto-google-cloud-pubsub-v1:1.126.0:1.126.1-SNAPSHOT