diff --git a/kos-sim/__init__.py b/kos_sim/__init__.py
similarity index 100%
rename from kos-sim/__init__.py
rename to kos_sim/__init__.py
diff --git a/kos-sim/py.typed b/kos_sim/py.typed
similarity index 100%
rename from kos-sim/py.typed
rename to kos_sim/py.typed
diff --git a/kos-sim/requirements-dev.txt b/kos_sim/requirements-dev.txt
similarity index 100%
rename from kos-sim/requirements-dev.txt
rename to kos_sim/requirements-dev.txt
diff --git a/kos-sim/requirements.txt b/kos_sim/requirements.txt
similarity index 100%
rename from kos-sim/requirements.txt
rename to kos_sim/requirements.txt
diff --git a/setup.py b/setup.py
index 783c562..f59bac6 100644
--- a/setup.py
+++ b/setup.py
@@ -10,22 +10,22 @@
     long_description: str = f.read()
 
 
-with open("kos-sim/requirements.txt", "r", encoding="utf-8") as f:
+with open("kos_sim/requirements.txt", "r", encoding="utf-8") as f:
     requirements: list[str] = f.read().splitlines()
 
 
-with open("kos-sim/requirements-dev.txt", "r", encoding="utf-8") as f:
+with open("kos_sim/requirements-dev.txt", "r", encoding="utf-8") as f:
     requirements_dev: list[str] = f.read().splitlines()
 
 
-with open("kos-sim/__init__.py", "r", encoding="utf-8") as fh:
+with open("kos_sim/__init__.py", "r", encoding="utf-8") as fh:
     version_re = re.search(r"^__version__ = \"([^\"]*)\"", fh.read(), re.MULTILINE)
-assert version_re is not None, "Could not find version in kos-sim/__init__.py"
+assert version_re is not None, "Could not find version in kos_sim/__init__.py"
 version: str = version_re.group(1)
 
 
 setup(
-    name="kos-sim",
+    name="kos_sim",
     version=version,
     description="The kos-sim project",
     author="Wesley Maa",
@@ -36,7 +36,7 @@
     install_requires=requirements,
     tests_require=requirements_dev,
     extras_require={"dev": requirements_dev},
-    packages=["kos-sim"],
+    packages=["kos_sim"],
     # entry_points={
     #     "console_scripts": [
     #         "kos-sim.cli:main",