diff --git a/.env.example b/.env.example
index 0043ee4..5025ea1 100644
--- a/.env.example
+++ b/.env.example
@@ -1,5 +1,6 @@
 NETBOX_URL=
 NETBOX_TOKEN=
 REPO_URL=https://github.com/netbox-community/devicetype-library.git
+REPO_BRANCH=master
 IGNORE_SSL_ERRORS=False
 #SLUGS=c9300-48u isr4431 isr4331
diff --git a/README.md b/README.md
index 58315fd..390c1c8 100644
--- a/README.md
+++ b/README.md
@@ -77,6 +77,7 @@ docker build -t netbox-devicetype-import-library .
 The container supports the following env var as configuration : 
 
 - `REPO_URL`, the repo to look for device types (defaults to _https://github.com/netbox-community/devicetype-library.git_)
+- `REPO_BRANCH`, the branch to check out if appropriate, defaults to master.
 - `NETBOX_URL`, used to access netbox
 - `NETBOX_TOKEN`, token for accessing netbox
 - `VENDORS`, a space-separated list of vendors to import (defaults to None)
diff --git a/nb-dt-import.py b/nb-dt-import.py
index 6a51b86..1ffca5c 100755
--- a/nb-dt-import.py
+++ b/nb-dt-import.py
@@ -14,11 +14,12 @@ import sys
 counter = Counter(added=0, updated=0, manufacturer=0)
 
 
-def update_package(path: str):
+def update_package(path: str, branch: str):
     try:
         repo = Repo(path)
         if repo.remotes.origin.url.endswith('.git'):
             repo.remotes.origin.pull()
+            repo.git.checkout(branch)
             print(f"Pulled Repo {repo.remotes.origin.url}")
     except exc.InvalidGitRepositoryError:
         pass
@@ -394,7 +395,9 @@ def main():
 
     VENDORS = settings.VENDORS
     REPO_URL = settings.REPO_URL
+
     SLUGS = settings.SLUGS
+    REPO_BRANCH = settings.REPO_BRANCH
 
     parser = argparse.ArgumentParser(description='Import Netbox Device Types')
     parser.add_argument('--vendors', nargs='+', default=VENDORS,
@@ -403,7 +406,8 @@ def main():
                         help="Git URL with valid Device Type YAML files")
     parser.add_argument('--slugs', nargs='+', default=SLUGS,
                         help="List of device-type slugs to import eg. ap4431 ws-c3850-24t-l")
-
+    parser.add_argument('--branch', default=REPO_BRANCH,
+                        help="Git branch to use from repo")
     args = parser.parse_args()
 
     try:
@@ -412,7 +416,7 @@ def main():
                   + f"updating {os.path.join(cwd, 'repo')}")
             update_package('./repo')
         else:
-            repo = Repo.clone_from(args.url, os.path.join(cwd, 'repo'))
+            repo = Repo.clone_from(args.url, os.path.join(cwd, 'repo'), branch=args.branch)
             print(f"Package Installed {repo.remotes.origin.url}")
     except exc.GitCommandError as error:
         print("Couldn't clone {} ({})".format(args.url, error))
diff --git a/settings.py b/settings.py
index 34a9092..58a747c 100644
--- a/settings.py
+++ b/settings.py
@@ -3,6 +3,7 @@ from dotenv import load_dotenv
 load_dotenv()
 
 REPO_URL = os.getenv("REPO_URL")
+REPO_BRANCH = os.getenv("REPO_BRANCH", "master")
 NETBOX_URL = os.getenv("NETBOX_URL")
 NETBOX_TOKEN = os.getenv("NETBOX_TOKEN")
 IGNORE_SSL_ERRORS = (os.getenv("IGNORE_SSL_ERRORS", "False") == "True")