diff --git a/.github/release-please.yml b/.github/release-please.yml
index bd2014774..8c51cd7d6 100644
--- a/.github/release-please.yml
+++ b/.github/release-please.yml
@@ -6,4 +6,9 @@ branches:
   releaseType: java-yoshi
   bumpMinorPreMajor: true
   handleGHRelease: true
+- branch: protobuf-4.x-rc
+  releaseType: java-yoshi
+  bumpMinorPreMajor: true
+  handleGHRelease: true
+  manifest: true
 extraFiles: ["README.md"]
diff --git a/.github/workflows/unmanaged_dependency_check.yaml b/.github/workflows/unmanaged_dependency_check.yaml
index 68563931f..1aded2688 100644
--- a/.github/workflows/unmanaged_dependency_check.yaml
+++ b/.github/workflows/unmanaged_dependency_check.yaml
@@ -14,6 +14,6 @@ jobs:
       shell: bash
       run: .kokoro/build.sh
     - name: Unmanaged dependency check
-      uses: googleapis/sdk-platform-java/java-shared-dependencies/unmanaged-dependency-check@google-cloud-shared-dependencies/v3.54.1
+      uses: googleapis/sdk-platform-java/java-shared-dependencies/unmanaged-dependency-check@google-cloud-shared-dependencies/v3.54.2
       with:
         bom-path: pom.xml
diff --git a/.kokoro/presubmit/graalvm-native-a.cfg b/.kokoro/presubmit/graalvm-native-a.cfg
index df45eaecc..38cc2a00c 100644
--- a/.kokoro/presubmit/graalvm-native-a.cfg
+++ b/.kokoro/presubmit/graalvm-native-a.cfg
@@ -3,7 +3,7 @@
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
   key: "TRAMPOLINE_IMAGE"
-  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_a:3.54.1"
+  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_a:3.54.2"
 }
 
 env_vars: {
diff --git a/.kokoro/presubmit/graalvm-native-b.cfg b/.kokoro/presubmit/graalvm-native-b.cfg
index d110d2ae2..952e95813 100644
--- a/.kokoro/presubmit/graalvm-native-b.cfg
+++ b/.kokoro/presubmit/graalvm-native-b.cfg
@@ -3,7 +3,7 @@
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
   key: "TRAMPOLINE_IMAGE"
-  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_b:3.54.1"
+  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_b:3.54.2"
 }
 
 env_vars: {
diff --git a/.kokoro/presubmit/graalvm-native-c.cfg b/.kokoro/presubmit/graalvm-native-c.cfg
index 8e8342be5..f673877b3 100644
--- a/.kokoro/presubmit/graalvm-native-c.cfg
+++ b/.kokoro/presubmit/graalvm-native-c.cfg
@@ -3,7 +3,7 @@
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
   key: "TRAMPOLINE_IMAGE"
-  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_c:3.54.1"
+  value: "gcr.io/cloud-devrel-public-resources/graalvm_sdk_platform_c:3.54.2"
 }
 
 env_vars: {
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index d50431845..19b4ce3a1 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "2.34.0"
+  ".": "2.34.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ddcb0c48e..11ebcecf4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,30 @@
 # Changelog
 
+## [2.34.1](https://github.com/googleapis/java-spanner-jdbc/compare/v2.34.0...v2.34.1) (2025-12-16)
+
+
+### Bug Fixes
+
+* Cast double Inf and NaN to float ([#2304](https://github.com/googleapis/java-spanner-jdbc/issues/2304)) ([a947024](https://github.com/googleapis/java-spanner-jdbc/commit/a94702446aee20013157b45bf1d9c3938f0b6982)), closes [#2256](https://github.com/googleapis/java-spanner-jdbc/issues/2256)
+
+
+### Dependencies
+
+* Update actions/checkout action to v6 ([#2299](https://github.com/googleapis/java-spanner-jdbc/issues/2299)) ([fbc8969](https://github.com/googleapis/java-spanner-jdbc/commit/fbc8969d66f4687ce91268309a862a0cbe0a114c))
+* Update dependency com.google.cloud:google-cloud-spanner to v6.104.0 ([#2312](https://github.com/googleapis/java-spanner-jdbc/issues/2312)) ([930797b](https://github.com/googleapis/java-spanner-jdbc/commit/930797b71f30e458dee20679178ff3510fcba919))
+* Update dependency com.google.cloud:google-cloud-spanner to v6.105.0 ([#2325](https://github.com/googleapis/java-spanner-jdbc/issues/2325)) ([34a9768](https://github.com/googleapis/java-spanner-jdbc/commit/34a9768b203c967f4191427a815b71e1a503de8f))
+* Update dependency com.google.cloud:google-cloud-spanner-bom to v6.104.0 ([#2313](https://github.com/googleapis/java-spanner-jdbc/issues/2313)) ([5250e2d](https://github.com/googleapis/java-spanner-jdbc/commit/5250e2d069179bdeb773e5e0a1f2a5defd411811))
+* Update dependency com.google.cloud:google-cloud-spanner-bom to v6.105.0 ([#2326](https://github.com/googleapis/java-spanner-jdbc/issues/2326)) ([8f3e6b7](https://github.com/googleapis/java-spanner-jdbc/commit/8f3e6b72baccc5ae8dd5ce3c55807bc889a7f208))
+* Update dependency com.google.cloud:sdk-platform-java-config to v3.54.2 ([#2322](https://github.com/googleapis/java-spanner-jdbc/issues/2322)) ([2faffb4](https://github.com/googleapis/java-spanner-jdbc/commit/2faffb46c71e4b44b42dbc4bfd5d70a3e55eb5f6))
+* Update dependency io.opentelemetry:opentelemetry-bom to v1.57.0 ([#2316](https://github.com/googleapis/java-spanner-jdbc/issues/2316)) ([77aab00](https://github.com/googleapis/java-spanner-jdbc/commit/77aab00ec385a7bfe61615b6b250c0b97a9a9f07))
+* Update dependency net.bytebuddy:byte-buddy to v1.18.2 ([#2306](https://github.com/googleapis/java-spanner-jdbc/issues/2306)) ([ba7430c](https://github.com/googleapis/java-spanner-jdbc/commit/ba7430cd229214487dfe4db208cb274d4662bf19))
+* Update dependency net.bytebuddy:byte-buddy-agent to v1.18.2 ([#2307](https://github.com/googleapis/java-spanner-jdbc/issues/2307)) ([86dc72b](https://github.com/googleapis/java-spanner-jdbc/commit/86dc72b0e1d7199b229474008cb68400458f233e))
+* Update dependency org.springframework.boot:spring-boot to v4 ([#2300](https://github.com/googleapis/java-spanner-jdbc/issues/2300)) ([a6dddf2](https://github.com/googleapis/java-spanner-jdbc/commit/a6dddf2aef2e9d35ec2bf26ea1a1586ab65e122a))
+* Update dependency org.springframework.boot:spring-boot-starter-data-jdbc to v4 ([#2301](https://github.com/googleapis/java-spanner-jdbc/issues/2301)) ([92efa98](https://github.com/googleapis/java-spanner-jdbc/commit/92efa986a0880524a3d19685df0e08cf7815a69a))
+* Update dependency org.springframework.boot:spring-boot-starter-parent to v3.5.8 ([#2298](https://github.com/googleapis/java-spanner-jdbc/issues/2298)) ([5603846](https://github.com/googleapis/java-spanner-jdbc/commit/5603846fc004a0e31cbcf10bc246d477cd80d9dd))
+* Update dependency org.testcontainers:testcontainers to v2.0.3 ([#2323](https://github.com/googleapis/java-spanner-jdbc/issues/2323)) ([65302d4](https://github.com/googleapis/java-spanner-jdbc/commit/65302d44315548af3406853121e341523c89521c))
+* Update dependency org.testcontainers:testcontainers-bom to v2.0.3 ([#2324](https://github.com/googleapis/java-spanner-jdbc/issues/2324)) ([8e8b3a0](https://github.com/googleapis/java-spanner-jdbc/commit/8e8b3a0b4c613324a07609fa142330322e8eab95))
+
 ## [2.34.0](https://github.com/googleapis/java-spanner-jdbc/compare/v2.33.3...v2.34.0) (2025-11-18)
 
 
diff --git a/README.md b/README.md
index c43a63e3e..c8b59f1ef 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ If you are using Maven, add this to your pom.xml file:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-spanner-jdbc</artifactId>
-  <version>2.34.0</version>
+  <version>2.34.1</version>
 </dependency>
 ```
 <!--- {x-version-update-end} -->
@@ -30,7 +30,7 @@ If you are using Gradle without BOM, add this to your dependencies
 
 <!--- {x-version-update-start:google-cloud-spanner-jdbc:released} -->
 ```Groovy
-implementation 'com.google.cloud:google-cloud-spanner-jdbc:2.34.0'
+implementation 'com.google.cloud:google-cloud-spanner-jdbc:2.34.1'
 ```
 <!--- {x-version-update-end} -->
 
@@ -38,7 +38,7 @@ If you are using SBT, add this to your dependencies
 
 <!--- {x-version-update-start:google-cloud-spanner-jdbc:released} -->
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-spanner-jdbc" % "2.34.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-spanner-jdbc" % "2.34.1"
 ```
 <!--- {x-version-update-end} -->
 
diff --git a/pom.xml b/pom.xml
index 7b8042371..b10b4f77e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <artifactId>google-cloud-spanner-jdbc</artifactId>
-  <version>2.34.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner-jdbc:current} -->
+  <version>2.34.2-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner-jdbc:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Spanner JDBC</name>
   <url>https://github.com/googleapis/java-spanner-jdbc</url>
@@ -14,7 +14,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>sdk-platform-java-config</artifactId>
-    <version>3.54.1</version>
+    <version>3.54.2</version>
   </parent>
   <developers>
     <developer>
@@ -61,10 +61,15 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.103.0</version>
+        <version>6.105.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
+      <dependency>
+        <groupId>com.google.cloud</groupId>
+        <artifactId>grpc-gcp</artifactId>
+        <version>1.9.0</version>
+      </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-shared-dependencies</artifactId>
@@ -166,7 +171,7 @@
     <dependency>
       <groupId>org.testcontainers</groupId>
       <artifactId>testcontainers</artifactId>
-      <version>2.0.2</version>
+      <version>2.0.3</version>
       <scope>test</scope>
     </dependency>
     <dependency>
diff --git a/samples/quickperf/pom.xml b/samples/quickperf/pom.xml
index 2dc418ca3..3618b6461 100644
--- a/samples/quickperf/pom.xml
+++ b/samples/quickperf/pom.xml
@@ -12,7 +12,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>sdk-platform-java-config</artifactId>
-    <version>3.54.1</version>
+    <version>3.54.2</version>
     <relativePath/>
   </parent>
 
@@ -73,7 +73,7 @@
     <dependency>
       <groupId>org.testcontainers</groupId>
       <artifactId>testcontainers</artifactId>
-      <version>2.0.2</version>
+      <version>2.0.3</version>
       <scope>test</scope>
     </dependency>
     <dependency>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 9e28d67de..d80be289e 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-spanner-jdbc</artifactId>
-      <version>2.34.1-SNAPSHOT</version>
+      <version>2.34.2-SNAPSHOT</version>
     </dependency>
     <!-- {x-version-update-end} -->
 
diff --git a/samples/snippets/pom.xml b/samples/snippets/pom.xml
index f07e72d1b..12b2c88c8 100644
--- a/samples/snippets/pom.xml
+++ b/samples/snippets/pom.xml
@@ -9,7 +9,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>sdk-platform-java-config</artifactId>
-    <version>3.54.1</version>
+    <version>3.54.2</version>
     <relativePath/>
   </parent>
 
@@ -54,7 +54,7 @@
     <dependency>
       <groupId>org.testcontainers</groupId>
       <artifactId>testcontainers</artifactId>
-      <version>2.0.2</version>
+      <version>2.0.3</version>
       <scope>test</scope>
     </dependency>
     <dependency>
diff --git a/samples/spring-data-jdbc/googlesql/pom.xml b/samples/spring-data-jdbc/googlesql/pom.xml
index 6f393bd9f..a8c714ad5 100644
--- a/samples/spring-data-jdbc/googlesql/pom.xml
+++ b/samples/spring-data-jdbc/googlesql/pom.xml
@@ -30,10 +30,15 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.103.0</version>
+        <version>6.105.0</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>
+      <dependency>
+        <groupId>com.google.cloud</groupId>
+        <artifactId>grpc-gcp</artifactId>
+        <version>1.9.0</version>
+      </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
@@ -44,7 +49,7 @@
       <dependency>
         <groupId>io.opentelemetry</groupId>
         <artifactId>opentelemetry-bom</artifactId>
-        <version>1.56.0</version>
+        <version>1.57.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
@@ -90,7 +95,7 @@
     <dependency>
       <groupId>org.testcontainers</groupId>
       <artifactId>testcontainers</artifactId>
-      <version>2.0.2</version>
+      <version>2.0.3</version>
     </dependency>
 
     <dependency>
diff --git a/samples/spring-data-jdbc/postgresql/pom.xml b/samples/spring-data-jdbc/postgresql/pom.xml
index cf92e5121..bc60ad011 100644
--- a/samples/spring-data-jdbc/postgresql/pom.xml
+++ b/samples/spring-data-jdbc/postgresql/pom.xml
@@ -30,10 +30,15 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.103.0</version>
+        <version>6.105.0</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>
+      <dependency>
+        <groupId>com.google.cloud</groupId>
+        <artifactId>grpc-gcp</artifactId>
+        <version>1.9.0</version>
+      </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
@@ -44,7 +49,7 @@
       <dependency>
         <groupId>io.opentelemetry</groupId>
         <artifactId>opentelemetry-bom</artifactId>
-        <version>1.56.0</version>
+        <version>1.57.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
@@ -114,13 +119,13 @@
     <dependency>
       <groupId>net.bytebuddy</groupId>
       <artifactId>byte-buddy</artifactId>
-      <version>1.18.1</version>
+      <version>1.18.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>net.bytebuddy</groupId>
       <artifactId>byte-buddy-agent</artifactId>
-      <version>1.18.1</version>
+      <version>1.18.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>
@@ -132,7 +137,7 @@
     <dependency>
       <groupId>org.testcontainers</groupId>
       <artifactId>testcontainers</artifactId>
-      <version>2.0.2</version>
+      <version>2.0.3</version>
       <scope>test</scope>
     </dependency>
   </dependencies>
diff --git a/samples/spring-data-jdbc/postgresql/src/main/java/com/google/cloud/spanner/sample/OpenTelemetryConfiguration.java b/samples/spring-data-jdbc/postgresql/src/main/java/com/google/cloud/spanner/sample/OpenTelemetryConfiguration.java
index f1e615290..b833e48b7 100644
--- a/samples/spring-data-jdbc/postgresql/src/main/java/com/google/cloud/spanner/sample/OpenTelemetryConfiguration.java
+++ b/samples/spring-data-jdbc/postgresql/src/main/java/com/google/cloud/spanner/sample/OpenTelemetryConfiguration.java
@@ -36,8 +36,6 @@
 import java.io.IOException;
 import java.util.concurrent.ThreadLocalRandom;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.boot.autoconfigure.AutoConfiguration;
-import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
diff --git a/samples/spring-data-mybatis/googlesql/pom.xml b/samples/spring-data-mybatis/googlesql/pom.xml
index 8e0f26b49..8bd42c99c 100644
--- a/samples/spring-data-mybatis/googlesql/pom.xml
+++ b/samples/spring-data-mybatis/googlesql/pom.xml
@@ -35,10 +35,15 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.103.0</version>
+        <version>6.105.0</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>
+      <dependency>
+        <groupId>com.google.cloud</groupId>
+        <artifactId>grpc-gcp</artifactId>
+        <version>1.9.0</version>
+      </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
@@ -49,7 +54,7 @@
       <dependency>
         <groupId>org.testcontainers</groupId>
         <artifactId>testcontainers-bom</artifactId>
-        <version>2.0.2</version>
+        <version>2.0.3</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>
@@ -94,7 +99,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-spanner</artifactId>
-      <version>6.103.0</version>
+      <version>6.105.0</version>
       <type>test-jar</type>
       <scope>test</scope>
     </dependency>
@@ -108,13 +113,13 @@
     <dependency>
       <groupId>net.bytebuddy</groupId>
       <artifactId>byte-buddy</artifactId>
-      <version>1.18.1</version>
+      <version>1.18.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>net.bytebuddy</groupId>
       <artifactId>byte-buddy-agent</artifactId>
-      <version>1.18.1</version>
+      <version>1.18.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>
diff --git a/samples/spring-data-mybatis/postgresql/pom.xml b/samples/spring-data-mybatis/postgresql/pom.xml
index afb4717a9..96cec67c1 100644
--- a/samples/spring-data-mybatis/postgresql/pom.xml
+++ b/samples/spring-data-mybatis/postgresql/pom.xml
@@ -42,7 +42,7 @@
       <dependency>
         <groupId>org.testcontainers</groupId>
         <artifactId>testcontainers-bom</artifactId>
-        <version>2.0.2</version>
+        <version>2.0.3</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>
@@ -105,13 +105,13 @@
     <dependency>
       <groupId>net.bytebuddy</groupId>
       <artifactId>byte-buddy</artifactId>
-      <version>1.18.1</version>
+      <version>1.18.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>net.bytebuddy</groupId>
       <artifactId>byte-buddy-agent</artifactId>
-      <version>1.18.1</version>
+      <version>1.18.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>
diff --git a/versions.txt b/versions.txt
index e012595c7..06f38cdc6 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-spanner-jdbc:2.34.0:2.34.1-SNAPSHOT
+google-cloud-spanner-jdbc:2.34.1:2.34.2-SNAPSHOT