diff --git a/.gitignore b/.gitignore
index 8bc348e..6498037 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
+.venv/
 venv/
 __pycache__
\ No newline at end of file
diff --git a/automation.py b/automation.py
index d6fe58e..4371346 100644
--- a/automation.py
+++ b/automation.py
@@ -44,7 +44,7 @@
         total_tickets=total_tickets,
         t_releases=t_releases,
         existing_codebase=existing_codebase,
-        target_data_file=target_data_file, isHotFix=isHotFix, includesBugs=includesBugs)
+        target_data_file=target_data_file, isHotFix=isHotFix, includesBugs=includesBugs, parent_branch=parent_branch)
     calculate_releases(
         number_of_features=number_of_features,
         number_of_bugs=number_of_bugs,
diff --git a/requirements.txt b/requirements.txt
index be2b74d..725529d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,13 @@
-PyYAML==6.0.1
+certifi==2024.6.2
+charset-normalizer==3.3.2
+DateTime==5.5
+idna==3.7
+numpy==1.26.4
+pandas==2.2.2
+python-dateutil==2.9.0.post0
+pytz==2024.1
+requests==2.32.3
+six==1.16.0
+tzdata==2024.1
+urllib3==2.2.1
+zope.interface==6.4.post2
diff --git a/utils/math.py b/utils/calc.py
similarity index 100%
rename from utils/math.py
rename to utils/calc.py
diff --git a/utils/calcMetrics.py b/utils/calcMetrics.py
index d636bdb..fdef03b 100644
--- a/utils/calcMetrics.py
+++ b/utils/calcMetrics.py
@@ -1,15 +1,16 @@
 import os
 import yaml
 from utils.date import get_current_date
-from utils.math import calc_avg, calc_cfr_hotfix_to_release, calc_cfr_bugs_to_tasks_ratio, calc_cfr_bug_to_feature, calc_cfr_bug_release_ratio
+from utils.calc import calc_avg, calc_cfr_hotfix_to_release, calc_cfr_bugs_to_tasks_ratio, calc_cfr_bug_to_feature, calc_cfr_bug_release_ratio
 from utils.dir import create_directory_and_file
+from utils.leadTimeToChange import calcLeadTimeToChange
 
 current_date = get_current_date()
 
 # yields data.yaml
 
 
-def calculate_metrics(number_of_features, number_of_bugs, number_of_hotfixes, total_tickets, t_releases, existing_codebase=True, target_data_file='metrics/data.yaml', isHotFix="true", includesBugs="true"):
+def calculate_metrics(number_of_features, number_of_bugs, number_of_hotfixes, total_tickets, t_releases, existing_codebase=True, target_data_file='metrics/data.yaml', isHotFix="true", includesBugs="true", parent_branch='main'):
     if os.path.exists(target_data_file):
         print("Found existing target file, updating it with the latest release...")
 
@@ -62,6 +63,7 @@ def calculate_metrics(number_of_features, number_of_bugs, number_of_hotfixes, to
             average_hotfixes_per_release = calc_avg(
                 revised_total_hotfixes, current_release)
 
+            lead_time_to_chage = calcLeadTimeToChange(parent_branch)
             yaml_content = f"""
             .total_releases = {current_release} |
             .total_feature_releases = {revised_total_features} |
@@ -71,6 +73,7 @@ def calculate_metrics(number_of_features, number_of_bugs, number_of_hotfixes, to
             .average_features_per_release = {average_features_per_release} |
             .average_bugs_per_release = {average_bugs_per_release} |
             .average_hotfixes_per_release = {average_hotfixes_per_release} |
+            .lead_time_to_change = {lead_time_to_chage} |
             .cfr_hotfix_to_release = "{cfr_hotfix_to_release} %" |
             .cfr_bugs_to_tasks_ratio = "{cfr_bugs_to_tasks_ratio} %" |
             .cfr_bug_to_feature = "{cfr_bug_to_feature} %" |
diff --git a/utils/leadTimeToChange.py b/utils/leadTimeToChange.py
new file mode 100644
index 0000000..791d18e
--- /dev/null
+++ b/utils/leadTimeToChange.py
@@ -0,0 +1,79 @@
+# dora_metrics.py
+import os
+import requests
+import pandas as pd
+from datetime import datetime
+
+GITHUB_TOKEN = os.getenv('GITHUB_TOKEN')
+
+# GitHub repository details
+REPO_OWNER = 'wednesday-solutions'
+REPO_NAME = 'gen-ai-audio'
+
+# GitHub API base URL
+BASE_URL = f'https://api.github.com/repos/{REPO_OWNER}/{REPO_NAME}'
+
+# Headers for authentication
+HEADERS = {
+    'Authorization': f'token {GITHUB_TOKEN}',
+    'Accept': 'application/vnd.github.v3+json'
+}
+
+
+def fetch_pull_requests(branch):
+    url = f'{BASE_URL}/pulls'
+    params = {
+        'state': 'closed',
+        'base': branch
+    }
+    response = requests.get(url, headers=HEADERS, params=params)
+    response.raise_for_status()
+    return response.json()
+
+
+def fetch_commits(branch):
+    url = f'{BASE_URL}/commits'
+    params = {'sha': branch}
+    response = requests.get(url, headers=HEADERS, params=params)
+    response.raise_for_status()
+    return response.json()
+
+
+def get_commit_date(commit_url):
+    response = requests.get(commit_url, headers=HEADERS)
+    response.raise_for_status()
+    commit_data = response.json()
+    return commit_data['commit']['committer']['date']
+
+
+def calculate_lead_time(pr):
+    pr_created_at = datetime.strptime(pr['created_at'], '%Y-%m-%dT%H:%M:%SZ')
+    pr_merged_at = datetime.strptime(pr['merged_at'], '%Y-%m-%dT%H:%M:%SZ')
+    lead_time = pr_merged_at - pr_created_at
+    return lead_time
+
+
+def calcLeadTimeToChange(branch='main'):
+    # Fetch pull requests merged into the base branch
+    prs = fetch_pull_requests(branch)
+    lead_times = []
+    prCount = len(prs)
+
+    if prCount > 0:
+        for pr in prs:
+            if pr['merged_at'] is None:
+                continue
+            lead_time = calculate_lead_time(pr)
+            lead_times.append({
+                'PR': pr['title'],
+                'Lead Time': lead_time.total_seconds() / 3600  # Convert to hours
+            })
+
+    # Create a DataFrame for analysis
+    df = pd.DataFrame(lead_times)
+    print(df)
+
+    # Calculate average lead time
+    average_lead_time = df['Lead Time'].mean()
+    print(f'Average Lead Time for Changes: {average_lead_time:.2f} hours')
+    return average_lead_time