diff --git a/juju/model.py b/juju/model.py
index a51944de..3b802486 100644
--- a/juju/model.py
+++ b/juju/model.py
@@ -2060,7 +2060,7 @@ async def add_local_resources(self, application, entity_url, metadata, resources
                 data = yaml.dump(docker_image_details)
             else:
                 p = Path(path)
-                data = p.read_text() if p.exists() else ''
+                data = p.read_bytes() if p.exists() else b''
 
             self._upload(data, path, application, name, resource_type, pending_id)
 
@@ -2078,7 +2078,7 @@ def _upload(self, data, path, app_name, res_name, res_type, pending_id):
 
         headers['Content-Type'] = 'application/octet-stream'
         headers['Content-Length'] = len(data)
-        headers['Content-Sha384'] = hashlib.sha384(bytes(data, 'utf-8')).hexdigest()
+        headers['Content-Sha384'] = hashlib.sha384(data).hexdigest()
         headers['Content-Disposition'] = disp
 
         conn.request('PUT', url, data, headers)