diff --git a/commit0/harness/execution_context.py b/commit0/harness/execution_context.py
index 27fd5b4..a90052b 100644
--- a/commit0/harness/execution_context.py
+++ b/commit0/harness/execution_context.py
@@ -9,7 +9,8 @@
 import logging
 import modal
 import modal.io_streams
-from enum import StrEnum, auto
+from enum import auto
+from strenum import StrEnum
 from pathlib import Path
 import time
 from typing import Optional, Type
diff --git a/commit0/harness/run_pytest_ids.py b/commit0/harness/run_pytest_ids.py
index 657ac82..37f011e 100644
--- a/commit0/harness/run_pytest_ids.py
+++ b/commit0/harness/run_pytest_ids.py
@@ -122,6 +122,7 @@ def main(
     eval_file = Path(log_dir / "eval.sh")
     eval_file.write_text(eval_script)
 
+    backend = backend.upper()
     if ExecutionBackend(backend) == ExecutionBackend.MODAL:
         logger.info("Runnning on Modal")
         execution_context = Modal
diff --git a/pyproject.toml b/pyproject.toml
index 7eb6305..a7b2e4d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,6 +19,7 @@ dependencies = [
     "pytest>=8.3.3",
     "datasets==3.0.1",
     "modal>=0.66.26",
+    "strenum>=0.4.15",
 ]
 classifiers = [
     "License :: OSI Approved :: MIT License",
diff --git a/uv.lock b/uv.lock
index 982f45a..1d5f7d9 100644
--- a/uv.lock
+++ b/uv.lock
@@ -367,7 +367,7 @@ wheels = [
 
 [[package]]
 name = "commit0"
-version = "0.1.6"
+version = "0.1.7"
 source = { editable = "." }
 dependencies = [
     { name = "datasets" },
@@ -379,6 +379,7 @@ dependencies = [
     { name = "pre-commit" },
     { name = "pytest" },
     { name = "ruff" },
+    { name = "strenum" },
     { name = "typer" },
 ]
 
@@ -403,6 +404,7 @@ requires-dist = [
     { name = "pymupdf", marker = "extra == 'agent'", specifier = ">=1.24.5" },
     { name = "pytest", specifier = ">=8.3.3" },
     { name = "ruff", specifier = ">=0.6.4" },
+    { name = "strenum", specifier = ">=0.4.15" },
     { name = "typer", specifier = ">=0.12.0" },
 ]
 
@@ -1885,6 +1887,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/96/00/2b325970b3060c7cecebab6d295afe763365822b1306a12eeab198f74323/starlette-0.41.3-py3-none-any.whl", hash = "sha256:44cedb2b7c77a9de33a8b74b2b90e9f50d11fcf25d8270ea525ad71a25374ff7", size = 73225 },
 ]
 
+[[package]]
+name = "strenum"
+version = "0.4.15"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/85/ad/430fb60d90e1d112a62ff57bdd1f286ec73a2a0331272febfddd21f330e1/StrEnum-0.4.15.tar.gz", hash = "sha256:878fb5ab705442070e4dd1929bb5e2249511c0bcf2b0eeacf3bcd80875c82eff", size = 23384 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/81/69/297302c5f5f59c862faa31e6cb9a4cd74721cd1e052b38e464c5b402df8b/StrEnum-0.4.15-py3-none-any.whl", hash = "sha256:a30cda4af7cc6b5bf52c8055bc4bf4b2b6b14a93b574626da33df53cf7740659", size = 8851 },
+]
+
 [[package]]
 name = "synchronicity"
 version = "0.9.3"