diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1663e2b3..70fd356ed 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.123.16](https://github.com/googleapis/java-pubsub/compare/v1.123.15...v1.123.16) (2023-06-26)
+
+
+### Dependencies
+
+* Update dependency com.google.protobuf:protobuf-java-util to v3.23.3 ([#1634](https://github.com/googleapis/java-pubsub/issues/1634)) ([2481c4b](https://github.com/googleapis/java-pubsub/commit/2481c4b8799bbe78542b4a8dd6c2484be08f30a1))
+
 ## [1.123.15](https://github.com/googleapis/java-pubsub/compare/v1.123.14...v1.123.15) (2023-06-22)
 
 
diff --git a/README.md b/README.md
index ee8b0809c..91c91f2a1 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>26.14.0</version>
+      <version>26.17.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>
@@ -44,7 +44,7 @@ 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>1.123.14</version>
+  <version>1.123.15</version>
 </dependency>
 
 ```
@@ -59,13 +59,13 @@ 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:1.123.14'
+implementation 'com.google.cloud:google-cloud-pubsub:1.123.15'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-pubsub" % "1.123.14"
+libraryDependencies += "com.google.cloud" % "google-cloud-pubsub" % "1.123.15"
 ```
 <!-- {x-version-update-end} -->
 
@@ -408,7 +408,7 @@ 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/1.123.14
+[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-pubsub/1.123.15
 [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 a61507ca1..0d9dad650 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>1.123.15</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+  <version>1.123.16</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>1.123.15</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+        <version>1.123.16</version><!-- {x-version-update:google-cloud-pubsub:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-pubsub-v1</artifactId>
-        <version>1.105.15</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
+        <version>1.105.16</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>1.105.15</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
+        <version>1.105.16</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 666e3a2d0..2aae458de 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>1.123.15</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+  <version>1.123.16</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>1.123.15</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+    <version>1.123.16</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-pubsub</site.installationModule>
diff --git a/grpc-google-cloud-pubsub-v1/pom.xml b/grpc-google-cloud-pubsub-v1/pom.xml
index b0abc682c..0e2e4baee 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>1.105.15</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
+  <version>1.105.16</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>1.123.15</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+    <version>1.123.16</version><!-- {x-version-update:google-cloud-pubsub:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 1733f6d2d..1992053ee 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>1.123.15</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+  <version>1.123.16</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>1.105.15</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
+        <version>1.105.16</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>1.105.15</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
+        <version>1.105.16</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-pubsub</artifactId>
-        <version>1.123.15</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+        <version>1.123.16</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 661f2df6e..3a48177a4 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>1.105.15</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
+  <version>1.105.16</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>1.123.15</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+    <version>1.123.16</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 114a4cd40..2253090b4 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -44,7 +44,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-pubsub</artifactId>
-      <version>1.123.14</version>
+      <version>1.123.15</version>
     </dependency>
     <!-- [END pubsub_install_without_bom] -->
 
@@ -75,7 +75,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.12</version>
+      <version>3.23.3</version>
     </dependency>
     <dependency>
       <groupId>com.google.cloud</groupId>
diff --git a/samples/native-image-sample/pom.xml b/samples/native-image-sample/pom.xml
index 810e0b652..dd356262f 100644
--- a/samples/native-image-sample/pom.xml
+++ b/samples/native-image-sample/pom.xml
@@ -30,7 +30,7 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>26.14.0</version>
+        <version>26.17.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 0f57e6796..35c5a58a0 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>1.123.15</version>
+      <version>1.123.16</version>
     </dependency>
     <!-- {x-version-update-end} -->
 
@@ -61,7 +61,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.12</version>
+      <version>3.23.3</version>
     </dependency>
 
     <dependency>
diff --git a/samples/snippets/pom.xml b/samples/snippets/pom.xml
index a34463f80..ac37786c9 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>26.14.0</version>
+        <version>26.17.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
@@ -76,7 +76,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.12</version>
+      <version>3.23.3</version>
     </dependency>
 
     <dependency>
diff --git a/versions.txt b/versions.txt
index 0dff0f59d..dcd0d6ec3 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,6 +1,6 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-pubsub:1.123.15:1.123.15
-grpc-google-cloud-pubsub-v1:1.105.15:1.105.15
-proto-google-cloud-pubsub-v1:1.105.15:1.105.15
+google-cloud-pubsub:1.123.16:1.123.16
+grpc-google-cloud-pubsub-v1:1.105.16:1.105.16
+proto-google-cloud-pubsub-v1:1.105.16:1.105.16