diff --git a/pyproject.toml b/pyproject.toml
index b83c5134b2..1d3d14810d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -80,7 +80,7 @@ dependencies = [
     "pycountry>=26.2.16,<27",
     "pycryptodome>=3.18,<4",
     "pydantic-settings>=2.14.1,<3",
-    "pydantic-xml>=2.20.0,<3",
+    "pydantic-xml>=2.21.0,<3",
     "pydantic[email]>=2.13.4,<3",
     "pyinstrument>=5.0,<6",
     "PyJWT>=2.8,<3",
diff --git a/src/palace/manager/integration/license/boundless/model/xml.py b/src/palace/manager/integration/license/boundless/model/xml.py
index 9c09324381..a67da0a7e7 100644
--- a/src/palace/manager/integration/license/boundless/model/xml.py
+++ b/src/palace/manager/integration/license/boundless/model/xml.py
@@ -43,6 +43,7 @@ def from_xml(
         cls,
         source: str | bytes,
         context: dict[str, Any] | None = None,
+        empty_as_string: bool = False,
         **kwargs: Any,
     ) -> Self:
         """
@@ -55,7 +56,9 @@ def from_xml(
         if "parser" not in kwargs:
             kwargs["parser"] = etree.XMLParser(recover=True)
         try:
-            return super().from_xml(source, context, **kwargs)
+            return super().from_xml(
+                source, context, empty_as_string=empty_as_string, **kwargs
+            )
         except AttributeError:
             # Because we are using a very lenient XML parser, we can end up with
             # None coming back from the XML parser, which causes an AttributeError
diff --git a/uv.lock b/uv.lock
index 6642a2826a..aec2cc0d6f 100644
--- a/uv.lock
+++ b/uv.lock
@@ -2202,7 +2202,7 @@ requires-dist = [
     { name = "pycryptodome", specifier = ">=3.18,<4" },
     { name = "pydantic", extras = ["email"], specifier = ">=2.13.4,<3" },
     { name = "pydantic-settings", specifier = ">=2.14.1,<3" },
-    { name = "pydantic-xml", specifier = ">=2.20.0,<3" },
+    { name = "pydantic-xml", specifier = ">=2.21.0,<3" },
     { name = "pyinstrument", specifier = ">=5.0,<6" },
     { name = "pyjwt", specifier = ">=2.8,<3" },
     { name = "pyld", specifier = "==3.0.0" },
@@ -2690,15 +2690,15 @@ wheels = [
 
 [[package]]
 name = "pydantic-xml"
-version = "2.20.0"
+version = "2.21.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "pydantic" },
     { name = "pydantic-core" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/cf/ab/5589aac52a5601bc91122625043034898c66fbe9fedce6785bfc6ef6e69e/pydantic_xml-2.20.0.tar.gz", hash = "sha256:38eb71fb66c05c31c632a50e964c273f67dafddc5aa7c64cd6bd2b487dc2eeaf", size = 26440, upload-time = "2026-04-11T21:24:23.967Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/13/87/085533e0873b2f80bdeb12156ffe5dddae7ee55573e2057ad574d73e3b6a/pydantic_xml-2.21.0.tar.gz", hash = "sha256:678ba9149c24e190ad94d6e3ce47f94cbb1409fd88d7df65d3d26939ff669ed0", size = 26825, upload-time = "2026-05-17T15:24:19.534Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/7d/e0/e0baac028479a09b2b46d09c8f0b2a32d4991e7c7bd13c544e64c6ff86d0/pydantic_xml-2.20.0-py3-none-any.whl", hash = "sha256:b492819830ff368124c9f8b53ea23953373422eebded2393e9d99008a086e07a", size = 42882, upload-time = "2026-04-11T21:24:25.096Z" },
+    { url = "https://files.pythonhosted.org/packages/8e/b1/278da37b539595b2cb6bb4fb3da1d69ff084c7bf5cc143f0a444550dc41a/pydantic_xml-2.21.0-py3-none-any.whl", hash = "sha256:966b8990746528304ebb96c97db7603ee3faf38f06266247b1fa444dbc16f8d6", size = 43449, upload-time = "2026-05-17T15:24:21.182Z" },
 ]
 
 [[package]]