diff --git a/scwx-qt/tools/generate_versions.py b/scwx-qt/tools/generate_versions.py
index c6c94020..3fcdcf08 100644
--- a/scwx-qt/tools/generate_versions.py
+++ b/scwx-qt/tools/generate_versions.py
@@ -1,6 +1,5 @@
 import argparse
 import datetime
-import git
 import json
 import os
 import pathlib
@@ -110,27 +109,22 @@ def ParseArguments():
                         required = True)
     return parser.parse_args()
 
+def GetYearFromLicense(license_file: pathlib.Path):
+    import re
+    for line in license_file.read_text().splitlines():
+        m = re.search(r'^\s*Copyright \(c\) 2021-(\d{4,})', line)
+        if m is not None:
+            return int(m.group(1))
+    raise RuntimeError(f"Could not find copyright year in {license_file}")
+
 def CollectVersionInfo(args):
     print("Collecting version info")
 
     versionInfo = VersionInfo()
-
-    repo = git.Repo(args.gitRepo_, search_parent_directories = True)
-
-    commitString = str(repo.head.commit)[:10]
-
-    if not repo.is_dirty(submodules = False):
-        copyrightYear = datetime.datetime.fromtimestamp(repo.head.commit.committed_date).year
-    else:
-        commitString  = commitString + "+dirty"
-        copyrightYear = datetime.date.today().year
-
-    resourceDir = str(args.gitRepo_).replace("\\", "\\\\")
-
     versionInfo.buildNumber_   = args.buildNumber_
-    versionInfo.commitString_  = commitString
-    versionInfo.copyrightYear_ = copyrightYear
-    versionInfo.resourceDir_   = resourceDir
+    versionInfo.commitString_  = "@rev@"
+    versionInfo.copyrightYear_ = GetYearFromLicense(args.gitRepo_ / 'LICENSE.txt')
+    versionInfo.resourceDir_   = str(args.gitRepo_).replace("\\", "\\\\")
     versionInfo.versionString_ = args.version_
 
     versionInfo.Calculate()