diff --git a/.github/scripts/update_generation_config.sh b/.github/scripts/update_generation_config.sh
index 93e1a47bea..2acad04855 100644
--- a/.github/scripts/update_generation_config.sh
+++ b/.github/scripts/update_generation_config.sh
@@ -1,32 +1,12 @@
 #!/bin/bash
-set -ex
+set -e
 # This script should be run at the root of the repository.
-# This script is used to update googleapis_commitish, gapic_generator_version,
-# and libraries_bom_version in generation configuration at the time of running
-# and create a pull request.
+# This script is used to update googleapis commit to latest in generation
+# configuration at the time of running and create a pull request.
 
 # The following commands need to be installed before running the script:
 # 1. git
 # 2. gh
-# 3. jq
-
-# Utility functions
-# Get the latest released version of a Maven artifact.
-function get_latest_released_version() {
-    local group_id=$1
-    local artifact_id=$2
-    latest=$(curl -s "https://search.maven.org/solrsearch/select?q=g:${group_id}+AND+a:${artifact_id}&core=gav&rows=500&wt=json" | jq -r '.response.docs[] | select(.v | test("^[0-9]+(\\.[0-9]+)*$")) | .v' | sort -V | tail -n 1)
-    echo "${latest}"
-}
-
-# Update a key to a new value in the generation config.
-function update_config() {
-    local key_word=$1
-    local new_value=$2
-    local file=$3
-    echo "Update ${key_word} to ${new_value} in ${file}"
-    sed -i -e "s/^${key_word}.*$/${key_word}: ${new_value}/" "${file}"
-}
 
 # The parameters of this script is:
 # 1. base_branch, the base branch of the result pull request.
@@ -72,50 +52,62 @@ if [ -z "${generation_config}" ]; then
 fi
 
 current_branch="generate-libraries-${base_branch}"
-title="chore: Update generation configuration at $(date)"
+title="chore: update googleapis commit 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
 latest_commit=$(git rev-parse HEAD)
 popd
 rm -rf tmp-googleapis
-update_config "googleapis_commitish" "${latest_commit}" "${generation_config}"
-
-# update gapic-generator-java version to the latest
-latest_version=$(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
-latest_version=$(get_latest_released_version "com.google.cloud" "libraries-bom")
-update_config "libraries_bom_version" "${latest_version}" "${generation_config}"
+sed -i -e "s/^googleapis_commitish.*$/googleapis_commitish: ${latest_commit}/" "${generation_config}"
 
 git add "${generation_config}"
 changed_files=$(git diff --cached --name-only)
 if [[ "${changed_files}" == "" ]]; then
-    echo "The latest generation config is not changed."
+    echo "The latest googleapis commit is not changed."
     echo "Skip committing to the pull request."
+else
+    git commit -m "${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
   git push
-  gh pr edit "${pr_num}" --title "${title}" --body "${title}"
 fi
diff --git a/README.md b/README.md
index c1b80b33e8..08372906aa 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ 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-bigtable'
 ```
diff --git a/generation_config.yaml b/generation_config.yaml
index c885f1fb10..d150ade6ee 100644
--- a/generation_config.yaml
+++ b/generation_config.yaml
@@ -1,6 +1,6 @@
-gapic_generator_version: 2.50.0
-googleapis_commitish: 349841abac6c3e580ccce6e3d6fcc182ed2512c2
-libraries_bom_version: 26.50.0
+gapic_generator_version: 2.51.0
+googleapis_commitish: f4eff5440fd07389f820d22d2a55690c6390dc6d
+libraries_bom_version: 26.51.0
 template_excludes:
   - .gitignore
   - .kokoro/presubmit/integration.cfg
diff --git a/renovate.json b/renovate.json
index 3c5874c1a2..837f09eaa2 100644
--- a/renovate.json
+++ b/renovate.json
@@ -73,11 +73,10 @@
     },
     {
       "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"
+      "groupName": "shared dependencies"
     }
   ],
   "regexManagers": [
@@ -109,16 +108,6 @@
       "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"
     }
   ],
   "semanticCommits": true,