diff --git a/build_swagger_spec.py b/build_swagger_spec.py
index 5f1be2c..c9f9412 100644
--- a/build_swagger_spec.py
+++ b/build_swagger_spec.py
@@ -2,7 +2,8 @@
 import sys
 import argparse
 import json
-import pkg_resources
+import importlib
+import importlib.metadata
 from flask_swagger import swagger
 
 sys.path.append(os.getcwd())
@@ -15,11 +16,21 @@
 parser.add_argument('--host', default=None)
 parser.add_argument('--base-path', default=None)
 parser.add_argument('--version', default=None, help='Specify a spec version')
+parser.add_argument('--from-file-keyword', default=None, help='from file keyword')
 
 args = parser.parse_args()
 
+
 def run():
-    app = pkg_resources.EntryPoint.parse("x=%s" % args.app).resolve()
+    entries = importlib.metadata.entry_points(value=args.app)
+    print(f'build_swagger_spec.run: app: {args.app} entries: ({len(entries)}/{entries})')
+    for entry in entries:
+        pass
+
+    the_module = entry.module
+    the_var = entry.value.split(':')[1]
+    mod = importlib.import_module(the_module)
+    app = getattr(mod, the_var)
 
     # load the base template
     template = None
@@ -36,7 +47,7 @@ def run():
                 for d in rawdefs.keys():
                     template['definitions'][d] = rawdefs[d]
 
-    spec = swagger(app, template=template)
+    spec = swagger(app, template=template, from_file_keyword=args.from_file_keyword)
     if args.host is not None:
         spec['host'] = args.host
     if args.base_path is not None: