diff --git a/github_deploy/commands/_constants.py b/github_deploy/commands/_constants.py
index 1249c71..a8fb431 100644
--- a/github_deploy/commands/_constants.py
+++ b/github_deploy/commands/_constants.py
@@ -1,2 +1,2 @@
 REPOS_URL = "https://api.github.com/search/repositories?q=org:{org}"
-BASE_URL = "https://api.github.com/repos/{repo}/contents/{path}"
+FILE_CONTENTS_URL = "https://api.github.com/repos/{repo}/contents/{path}"
diff --git a/github_deploy/commands/_repo_utils.py b/github_deploy/commands/_repo_utils.py
index 438d970..64b7d55 100644
--- a/github_deploy/commands/_repo_utils.py
+++ b/github_deploy/commands/_repo_utils.py
@@ -1,9 +1,11 @@
 import base64
+import os
 
 import aiofiles
 import asyncclick as click
+from aiofiles import os as aiofiles_os
 
-from github_deploy.commands._constants import REPOS_URL, BASE_URL
+from github_deploy.commands._constants import REPOS_URL, FILE_CONTENTS_URL
 from github_deploy.commands._http_utils import get, delete, put
 from github_deploy.commands._utils import get_headers
 
@@ -29,7 +31,7 @@ async def delete_content(
     if exists:
         data["sha"] = current_sha
 
-    url = BASE_URL.format(repo=repo, path=dest)
+    url = FILE_CONTENTS_URL.format(repo=repo, path=dest)
 
     async with semaphore:
         response = await delete(
@@ -40,7 +42,7 @@ async def delete_content(
 
 
 async def check_exists(*, session, repo, dest, token, semaphore, skip_missing):
-    url = BASE_URL.format(repo=repo, path=dest)
+    url = FILE_CONTENTS_URL.format(repo=repo, path=dest)
 
     async with semaphore:
         response = await get(
@@ -62,6 +64,7 @@ async def upload_content(
     token,
     semaphore,
     exists,
+    only_update,
     current_sha,
     current_content
 ):
@@ -73,6 +76,19 @@ async def upload_content(
     if current_content == base64_content:
         click.echo("Skipping: Contents are the same.")
         return
+    else:
+        if exists:
+            click.echo("Storing backup of existing file...")
+
+            dirname, filename = os.path.split(f"{repo}/{dest}")
+
+            await aiofiles_os.makedirs(dirname, exist_ok=True)
+
+            async with aiofiles.open(f"{dirname}/{filename}", mode="wb") as f:
+                await f.write(base64.b64decode(current_content))
+        elif only_update:
+            click.echo(f"Skipping: only updating existing files.")
+            return
 
     data = {
         "message": f"Updated {dest}"
@@ -83,7 +99,9 @@ async def upload_content(
     if exists:
         data["sha"] = current_sha
 
-    url = BASE_URL.format(repo=repo, path=dest)
+    url = FILE_CONTENTS_URL.format(repo=repo, path=dest)
+
+    click.echo(f"Uploading {source} to {repo}/{dest}...")
 
     async with semaphore:
         response = await put(
diff --git a/github_deploy/commands/upload.py b/github_deploy/commands/upload.py
index 3baf4a3..9d2e32d 100644
--- a/github_deploy/commands/upload.py
+++ b/github_deploy/commands/upload.py
@@ -8,7 +8,7 @@
 
 
 async def handle_file_upload(
-    *, repo, source, dest, overwrite, token, semaphore, session
+    *, repo, source, dest, overwrite, only_update, token, semaphore, session
 ):
     check_exists_response = await check_exists(
         session=session,
@@ -23,19 +23,18 @@ async def handle_file_upload(
     current_content = check_exists_response.get("content")
     exists = current_sha is not None
 
-    if exists and not overwrite:
-        return click.style(
-            "Skipped uploading {source} to {repo}/{path}: Found an existing copy.".format(
-                source=source,
-                repo=repo,
-                path=dest,
-            ),
-            fg="blue",
-            bold=True,
-        )
-
-    else:
-        if exists:
+    if exists:
+        if not overwrite:
+            return click.style(
+                "Skipped uploading {source} to {repo}/{path}: Found an existing copy.".format(
+                    source=source,
+                    repo=repo,
+                    path=dest,
+                ),
+                fg="blue",
+                bold=True,
+            )
+        else:
             click.echo(
                 click.style(
                     "Found an existing copy at {repo}/{path} overwriting it's contents...".format(
@@ -45,36 +44,32 @@ async def handle_file_upload(
                 ),
             )
 
-        upload_response = await upload_content(
-            session=session,
-            repo=repo,
-            source=source,
-            dest=dest,
-            token=token,
-            semaphore=semaphore,
-            exists=exists,
-            current_sha=current_sha,
-            current_content=current_content,
-        )
+    upload_response = await upload_content(
+        session=session,
+        repo=repo,
+        source=source,
+        dest=dest,
+        token=token,
+        semaphore=semaphore,
+        exists=exists,
+        only_update=only_update,
+        current_sha=current_sha,
+        current_content=current_content,
+    )
 
-        if upload_response:
-            return click.style(
-                "Successfully uploaded '{source}' to {repo}/{dest}".format(
-                    source=upload_response["content"]["name"],
-                    repo=repo,
-                    dest=upload_response["content"]["path"],
-                ),
-                fg="green",
-                bold=True,
-            )
+    if upload_response:
+        return click.style(
+            "Successfully uploaded '{source}' to {repo}/{dest}".format(
+                source=upload_response["content"]["name"],
+                repo=repo,
+                dest=upload_response["content"]["path"],
+            ),
+            fg="green",
+            bold=True,
+        )
 
 
 @click.command()
-@click.option(
-    "--org",
-    prompt=click.style("Enter your github user/organization", bold=True),
-    help="The github organization.",
-)
 @click.option(
     "--token",
     prompt=click.style("Enter your personal access token", bold=True),
@@ -82,6 +77,11 @@ async def handle_file_upload(
     hide_input=True,
     envvar="TOKEN",
 )
+@click.option(
+    "--org",
+    prompt=click.style("Enter your github user/organization", bold=True),
+    help="The github organization.",
+)
 @click.option(
     "--source",
     prompt=click.style("Enter path to source file", fg="blue"),
@@ -98,16 +98,30 @@ async def handle_file_upload(
     prompt=click.style(
         "Should we overwrite existing contents at this path", fg="blue"
     ),
+    is_flag=True,
+    show_default=True,
     help="Overwrite existing files.",
     default=False,
 )
+@click.option(
+    "--only-update/--no-only-update",
+    prompt=click.style(
+        "Should we only update existing files at this path", fg="blue"
+    ),
+    is_flag=True,
+    show_default=True,
+    help="Only update existing files.",
+    default=False,
+)
 @click.option(
     "--private/--no-private",
     prompt=click.style("Should we Include private repositories", bold=True),
+    is_flag=True,
+    show_default=True,
     help="Upload files to private repositories.",
     default=True,
 )
-async def main(org, token, source, dest, overwrite, private):
+async def main(org, token, source, dest, overwrite, only_update, private):
     """Upload a file to all repositories owned by an organization/user."""
     # create instance of Semaphore: max concurrent requests.
     semaphore = asyncio.Semaphore(1000)
@@ -171,6 +185,7 @@ async def main(org, token, source, dest, overwrite, private):
                     dest=dest,
                     token=token,
                     overwrite=overwrite,
+                    only_update=only_update,
                     session=session,
                     semaphore=semaphore,
                 )