diff --git a/update_manifest.py b/update_manifest.py
index 25bd8c16..10604f81 100644
--- a/update_manifest.py
+++ b/update_manifest.py
@@ -1,34 +1,85 @@
+import argparse
 import hashlib
+import logging
 import pathlib
+from typing import Optional
 import xml.etree.ElementTree
 
 """This script requires at least Python 3.7.0 to run."""
 
+logger = logging.getLogger(__name__)
+logger.addHandler(logging.NullHandler())
 
-def update_manifest():
+
+def update_manifest(version: Optional[str] = None, replace: bool = False):
+    """Update SHA1 hashes and version number for Path of Building's manifest file.
+
+    :param version: Three-part version number following https://semver.org/.
+    :param replace: Whether to overwrite the existing manifest file.
+    :return:
+    """
     supported_extensions = {".dll", ".jpg", ".lua", ".md", ".png", ".txt"}
     try:
         manifest = xml.etree.ElementTree.parse("manifest.xml")
     except FileNotFoundError:
-        print(f"Manifest file not found in path '{pathlib.Path().cwd()}'!")
+        logger.critical(f"Manifest file not found in path '{pathlib.Path().cwd()}'")
         return
     root = manifest.getroot()
 
     for file in root.iter("File"):
         path = pathlib.Path(file.get("name"))
         if path.suffix not in supported_extensions:
-            print(f"Skipping file type {path.suffix}")
+            logger.debug(f"Skipping file type {path.suffix}")
             continue
         try:
             data = path.read_bytes()
         except FileNotFoundError:
-            print(f"File not found, skipping {path}")
+            logger.error(f"File not found, skipping {path}")
             continue
         sha1_hash = hashlib.sha1(data).hexdigest()
         file.set("sha1", sha1_hash)
-        print(f"Path: {path} hash: {sha1_hash}")
-    manifest.write("manifest-updated.xml", encoding="utf-8", xml_declaration=True)
+        logger.info(f"Path: {path} hash: {sha1_hash}")
+    if version:
+        root.find("Version").set("number", version)
+        logger.info(f"Updated to version {version}")
+
+    file_name = "manifest.xml" if replace else "manifest-updated.xml"
+    manifest.write(file_name, encoding="utf-8", xml_declaration=True)
+
+
+def cli():
+    """CLI for conveniently updating Path of Building's manifest file."""
+
+    parser = argparse.ArgumentParser(
+        usage="%(prog)s [options] filename",
+        description="Update Path of Building's manifest file for a new release.",
+        allow_abbrev=False,
+    )
+    parser.version = "1.0.0"
+    parser.add_argument("--version", action="version")
+    logging_level = parser.add_mutually_exclusive_group()
+    logging_level.add_argument(
+        "-v", "--verbose", action="store_true", help="Print more logging information"
+    )
+    logging_level.add_argument(
+        "-q", "--quiet", action="store_true", help="Print no logging information"
+    )
+    parser.add_argument("--in-place", action="store_true", help="Replace original file")
+    parser.add_argument(
+        "--set-version",
+        action="store",
+        help="Set manifest version number",
+        metavar="SEMVER",
+    )
+    args = parser.parse_args()
+
+    logger.addHandler(logging.StreamHandler())
+    if args.verbose:
+        logger.setLevel(logging.INFO)
+    elif args.quiet:
+        logger.setLevel(logging.CRITICAL + 1)
+    update_manifest(args.set_version or None, args.in_place)
 
 
 if __name__ == "__main__":
-    update_manifest()
+    cli()