diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 95ab733..521804d 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "2.0.0-alpha.9"
+  ".": "2.0.0-alpha.10"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3ae1c53..54e1bbc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 2.0.0-alpha.10 (2025-05-09)
+
+Full Changelog: [v2.0.0-alpha.9...v2.0.0-alpha.10](https://github.com/hubmapconsortium/entity-python-sdk/compare/v2.0.0-alpha.9...v2.0.0-alpha.10)
+
+### Chores
+
+* **internal:** avoid errors for isinstance checks on proxies ([ea5c6d6](https://github.com/hubmapconsortium/entity-python-sdk/commit/ea5c6d68a5c19635941e23d9e4b9d2baf94c69d5))
+
 ## 2.0.0-alpha.9 (2025-04-24)
 
 Full Changelog: [v2.0.0-alpha.8...v2.0.0-alpha.9](https://github.com/hubmapconsortium/entity-python-sdk/compare/v2.0.0-alpha.8...v2.0.0-alpha.9)
diff --git a/pyproject.toml b/pyproject.toml
index ff51352..d74ca40 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "hubmap_entity_sdk"
-version = "2.0.0-alpha.9"
+version = "2.0.0-alpha.10"
 description = "The official Python library for the hubmap-entity-sdk API"
 dynamic = ["readme"]
 license = "MIT"
diff --git a/src/hubmap_entity_sdk/_utils/_proxy.py b/src/hubmap_entity_sdk/_utils/_proxy.py
index ffd883e..0f239a3 100644
--- a/src/hubmap_entity_sdk/_utils/_proxy.py
+++ b/src/hubmap_entity_sdk/_utils/_proxy.py
@@ -46,7 +46,10 @@ def __dir__(self) -> Iterable[str]:
     @property  # type: ignore
     @override
     def __class__(self) -> type:  # pyright: ignore
-        proxied = self.__get_proxied__()
+        try:
+            proxied = self.__get_proxied__()
+        except Exception:
+            return type(self)
         if issubclass(type(proxied), LazyProxy):
             return type(proxied)
         return proxied.__class__
diff --git a/src/hubmap_entity_sdk/_version.py b/src/hubmap_entity_sdk/_version.py
index 7cba17d..b660e16 100644
--- a/src/hubmap_entity_sdk/_version.py
+++ b/src/hubmap_entity_sdk/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "hubmap_entity_sdk"
-__version__ = "2.0.0-alpha.9"  # x-release-please-version
+__version__ = "2.0.0-alpha.10"  # x-release-please-version
diff --git a/tests/test_utils/test_proxy.py b/tests/test_utils/test_proxy.py
index 810060e..9846ba2 100644
--- a/tests/test_utils/test_proxy.py
+++ b/tests/test_utils/test_proxy.py
@@ -21,3 +21,14 @@ def test_recursive_proxy() -> None:
     assert dir(proxy) == []
     assert type(proxy).__name__ == "RecursiveLazyProxy"
     assert type(operator.attrgetter("name.foo.bar.baz")(proxy)).__name__ == "RecursiveLazyProxy"
+
+
+def test_isinstance_does_not_error() -> None:
+    class AlwaysErrorProxy(LazyProxy[Any]):
+        @override
+        def __load__(self) -> Any:
+            raise RuntimeError("Mocking missing dependency")
+
+    proxy = AlwaysErrorProxy()
+    assert not isinstance(proxy, dict)
+    assert isinstance(proxy, LazyProxy)