diff --git a/.gitignore b/.gitignore
index 9b0b4352..759f4f23 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ __pycache__
 .mypy_cache/
 **/client.key
 **/client.pem
+*.egg-info/
diff --git a/pyproject.toml b/pyproject.toml
index e8f3ebd8..510438e0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -84,59 +84,12 @@ constraint-dependencies = [
     "yarl!=1.24.0",
 ]
 
-[tool.hatch.metadata]
-allow-direct-references = true
-
-[tool.hatch.build.targets.sdist]
-include = ["./**/*.py"]
-exclude = ["lambda_worker/**"]
-
-[tool.hatch.build.targets.wheel]
-include = ["./**/*.py"]
-exclude = ["lambda_worker/**"]
-packages = [
-    "activity_worker",
-    "bedrock",
-    "cloud_export_to_parquet",
-    "context_propagation",
-    "custom_converter",
-    "custom_decorator",
-    "custom_metric",
-    "dsl",
-    "encryption",
-    "external_storage",
-    "external_storage_redis",
-    "gevent_async",
-    "hello",
-    "langgraph_plugin",
-    "langsmith_tracing",
-    "message_passing",
-    "nexus",
-    "open_telemetry",
-    "patching",
-    "polling",
-    "prometheus",
-    "pydantic_converter",
-    "pydantic_converter_v1",
-    "pyproject.toml",
-    "replay",
-    "schedules",
-    "sentry",
-    "sleep_for_days",
-    "strands_plugin",
-    "tests",
-    "trio_async",
-    "updatable_timer",
-    "worker_specific_task_queues",
-    "worker_versioning",
-]
-
-[tool.hatch.build.targets.wheel.sources]
-"./**/*.py" = "**/*.py"
+[tool.setuptools.packages.find]
+exclude = ["lambda_worker*"]
 
 [build-system]
-requires = ["hatchling"]
-build-backend = "hatchling.build"
+requires = ["setuptools>=77"]
+build-backend = "setuptools.build_meta"
 
 [tool.poe.tasks]
 format = [