diff --git a/hsmodels/__init__.py b/hsmodels/__init__.py
index e69de29..0fc8e5e 100644
--- a/hsmodels/__init__.py
+++ b/hsmodels/__init__.py
@@ -0,0 +1,16 @@
+from pydantic_core import Url
+
+
+def __add__(self, other):
+    return str(self) + other
+
+
+def __radd__(self, other):
+    return other + str(self)
+
+
+# monkey patch string concatentation until pydantic implements Url as an extension of str again
+# https://github.com/pydantic/pydantic-core/pull/1126
+
+Url.__add__ = __add__
+Url.__radd__ = __radd__
diff --git a/hsmodels/schemas/__init__.py b/hsmodels/schemas/__init__.py
index 81619b5..97ebf59 100644
--- a/hsmodels/schemas/__init__.py
+++ b/hsmodels/schemas/__init__.py
@@ -2,9 +2,9 @@
 from enum import Enum
 
 from pydantic import BaseModel
-from pydantic_core import Url
 from rdflib import Graph, Literal, URIRef
 
+from hsmodels import Url
 from hsmodels.namespaces import DC, HSTERMS, ORE, RDF, RDFS1
 from hsmodels.schemas.aggregations import (
     FileSetMetadata,
diff --git a/hsmodels/schemas/rdf/validators.py b/hsmodels/schemas/rdf/validators.py
index 63e5a79..0c9446f 100644
--- a/hsmodels/schemas/rdf/validators.py
+++ b/hsmodels/schemas/rdf/validators.py
@@ -1,5 +1,4 @@
-from pydantic_core import Url
-
+from hsmodels import Url
 from hsmodels.schemas.enums import CoverageType, DateType
 from hsmodels.schemas.languages_iso import languages
 
diff --git a/hsmodels/schemas/root_validators.py b/hsmodels/schemas/root_validators.py
index cd5e728..66a84aa 100644
--- a/hsmodels/schemas/root_validators.py
+++ b/hsmodels/schemas/root_validators.py
@@ -1,6 +1,6 @@
-from pydantic_core import Url
 from rdflib import URIRef
 
+from hsmodels import Url
 from hsmodels.schemas.enums import CoverageType, DateType, ModelProgramFileType, RelationType, UserIdentifierType
 from hsmodels.utils import to_coverage_dict
 
diff --git a/tests/test_metadata.py b/tests/test_metadata.py
index a35b47a..c024290 100644
--- a/tests/test_metadata.py
+++ b/tests/test_metadata.py
@@ -171,3 +171,9 @@ def test_resource_metadata(res_md):
         res_md.publisher.name == "Consortium of Universities for the Advancement of Hydrologic Science, Inc. (CUAHSI)"
     )
     assert str(res_md.publisher.url) == "https://www.cuahsi.org/"
+
+
+def test_resource_metadata_url_str_concat(res_md):
+    assert (
+        "concat test " + res_md.url == "concat test http://www.hydroshare.org/resource/84805fd615a04d63b4eada65644a1e20"
+    )