diff --git a/.github/scripts/update_generation_config.sh b/.github/scripts/update_generation_config.sh
index 561a31304..91434688c 100644
--- a/.github/scripts/update_generation_config.sh
+++ b/.github/scripts/update_generation_config.sh
@@ -28,11 +28,23 @@ function update_config() {
     sed -i -e "s/^${key_word}.*$/${key_word}: ${new_value}/" "${file}"
 }
 
+# Update an action to a new version in GitHub action.
+function update_action() {
+    local key_word=$1
+    local new_value=$2
+    local file=$3
+    echo "Update ${key_word} to ${new_value} in ${file}"
+    # use a different delimiter because the key_word contains "/".
+    sed -i -e "s|${key_word}@v.*$|${key_word}@v${new_value}|" "${file}"
+}
+
 # The parameters of this script is:
 # 1. base_branch, the base branch of the result pull request.
 # 2. repo, organization/repo-name, e.g., googleapis/google-cloud-java
 # 3. [optional] generation_config, the path to the generation configuration,
 # the default value is generation_config.yaml in the repository root.
+# 4. [optional] workflow, the library generation workflow file,
+# the default value is .github/workflows/hermetic_library_generation.yaml.
 while [[ $# -gt 0 ]]; do
 key="$1"
 case "${key}" in
@@ -48,6 +60,10 @@ case "${key}" in
     generation_config="$2"
     shift
     ;;
+  --workflow)
+    workflow="$2"
+    shift
+    ;;
   *)
     echo "Invalid option: [$1]"
     exit 1
@@ -71,21 +87,34 @@ if [ -z "${generation_config}" ]; then
   echo "Use default generation config: ${generation_config}"
 fi
 
+if [ -z "${workflow}" ]; then
+    workflow=".github/workflows/hermetic_library_generation.yaml"
+    echo "Use default library generation workflow file: ${workflow}"
+fi
+
 current_branch="generate-libraries-${base_branch}"
 title="chore: Update generation configuration at $(date)"
 
-# try to find a open pull request associated with the branch
+git checkout "${base_branch}"
+# Try to find a open pull request associated with the branch
 pr_num=$(gh pr list -s open -H "${current_branch}" -q . --json number | jq ".[] | .number")
-# create a branch if there's no open pull request associated with the
+# Create a branch if there's no open pull request associated with the
 # branch; otherwise checkout the pull request.
 if [ -z "${pr_num}" ]; then
   git checkout -b "${current_branch}"
+  # Push the current branch to remote so that we can
+  # compare the commits later.
+  git push -u origin "${current_branch}"
 else
   gh pr checkout "${pr_num}"
 fi
 
+# Only allow fast-forward merging; exit with non-zero result if there's merging
+# conflict.
+git merge -m "chore: merge ${base_branch} into ${current_branch}" "${base_branch}"
+
 mkdir tmp-googleapis
-# use partial clone because only commit history is needed.
+# Use partial clone because only commit history is needed.
 git clone --filter=blob:none https://github.com/googleapis/googleapis.git tmp-googleapis
 pushd tmp-googleapis
 git pull
@@ -94,25 +123,43 @@ popd
 rm -rf tmp-googleapis
 update_config "googleapis_commitish" "${latest_commit}" "${generation_config}"
 
-# update gapic-generator-java version to the latest
+# Update gapic-generator-java version to the latest
 latest_version=$(get_latest_released_version "com.google.api" "gapic-generator-java")
 update_config "gapic_generator_version" "${latest_version}" "${generation_config}"
 
-# update libraries-bom version to the latest
+# Update composite action version to latest gapic-generator-java version
+update_action "googleapis/sdk-platform-java/.github/scripts" \
+  "${latest_version}" \
+  "${workflow}"
+
+# Update libraries-bom version to the latest
 latest_version=$(get_latest_released_version "com.google.cloud" "libraries-bom")
 update_config "libraries_bom_version" "${latest_version}" "${generation_config}"
 
-git add "${generation_config}"
+git add "${generation_config}" "${workflow}"
 changed_files=$(git diff --cached --name-only)
 if [[ "${changed_files}" == "" ]]; then
     echo "The latest generation config is not changed."
     echo "Skip committing to the pull request."
+else
+    git commit -m "${title}"
+fi
+
+# There are potentially at most two commits: merge commit and change commit.
+# We want to exit the script if no commit happens (otherwise this will be an
+# infinite loop).
+# `git cherry` is a way to find whether the local branch has commits that are
+# not in the remote branch.
+# If we find any such commit, push them to remote branch.
+unpushed_commit=$(git cherry -v "origin/${current_branch}" | wc -l)
+if [[ "${unpushed_commit}" -eq 0 ]]; then
+    echo "No unpushed commits, exit"
     exit 0
 fi
-git commit -m "${title}"
+
 if [ -z "${pr_num}" ]; then
   git remote add remote_repo https://cloud-java-bot:"${GH_TOKEN}@github.com/${repo}.git"
-  git fetch -q --unshallow remote_repo
+  git fetch -q remote_repo
   git push -f remote_repo "${current_branch}"
   gh pr create --title "${title}" --head "${current_branch}" --body "${title}" --base "${base_branch}"
 else
diff --git a/README.md b/README.md
index ea3d10593..010a875c4 100644
--- a/README.md
+++ b/README.md
@@ -19,14 +19,14 @@ 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>26.50.0</version>
+      <version>26.51.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>
     <dependency>
       <groupId>io.opentelemetry</groupId>
       <artifactId>opentelemetry-bom</artifactId>
-      <version>1.44.1</version>
+      <version>1.45.0</version>
       <type>pom</type>
       <scope>import</scope>
      </dependency>
@@ -56,7 +56,7 @@ If you are using Maven without the BOM, add this to your dependencies:
 If you are using Gradle 5.x or later, add this to your dependencies:
 
 ```Groovy
-implementation platform('com.google.cloud:libraries-bom:26.50.0')
+implementation platform('com.google.cloud:libraries-bom:26.51.0')
 
 implementation 'com.google.cloud:google-cloud-bigquerystorage'
 ```
diff --git a/generation_config.yaml b/generation_config.yaml
index f1a22f1f5..d506a228f 100644
--- a/generation_config.yaml
+++ b/generation_config.yaml
@@ -1,6 +1,6 @@
-gapic_generator_version: 2.50.0
-googleapis_commitish: 9ea2c56cb70d70f10fd2bef310ac9febe8d42d30
-libraries_bom_version: 26.50.0
+gapic_generator_version: 2.51.0
+googleapis_commitish: 7d0c6bee2517d77635beb2a1dd6d6e7d4d943512
+libraries_bom_version: 26.51.0
 libraries:
     - api_shortname: bigquerystorage
       name_pretty: BigQuery Storage
diff --git a/renovate.json b/renovate.json
index 4b48f48dd..154cbe892 100644
--- a/renovate.json
+++ b/renovate.json
@@ -29,16 +29,6 @@
       "matchStrings": ["uses: googleapis/sdk-platform-java/java-shared-dependencies/unmanaged-dependency-check@google-cloud-shared-dependencies/v(?<currentValue>.+?)\\n"],
       "depNameTemplate": "com.google.cloud:sdk-platform-java-config",
       "datasourceTemplate": "maven"
-    },
-    {
-      "fileMatch": [
-        ".github/workflows/hermetic_library_generation.yaml"
-      ],
-      "matchStrings": [
-        "uses: googleapis/sdk-platform-java/.github/scripts@v(?<currentValue>.+?)\\n"
-      ],
-      "depNameTemplate": "com.google.api:gapic-generator-java",
-      "datasourceTemplate": "maven"
     }
   ],
   "packageRules": [
@@ -99,14 +89,6 @@
         "^com.google.cloud:google-cloud-"
       ],
       "ignoreUnstable": false
-    },
-    {
-      "packagePatterns": [
-        "^com.google.api:gapic-generator-java",
-        "^com.google.cloud:sdk-platform-java-config",
-        "^com.google.cloud:gapic-libraries-bom"
-      ],
-      "groupName": "sdk-platform-java dependencies"
     }
   ],
   "semanticCommits": true,