diff --git a/metricflow-semantics/pyproject.toml b/metricflow-semantics/pyproject.toml
index 7b2fcf9f71..6ac8e6293f 100644
--- a/metricflow-semantics/pyproject.toml
+++ b/metricflow-semantics/pyproject.toml
@@ -33,16 +33,21 @@ files = [
   "extra-hatch-configuration/requirements.txt",
 ]
 
-[tool.hatch.metadata.hooks.requirements_txt.optional-dependencies]
-dev-packages = [
-  "extra-hatch-configuration/requirements-dev-packages.txt",
-]
-
 [tool.hatch.envs.dev-env]
 description = "Environment for development. Includes a DuckDB-backed client."
 
-features = [
-  "dev-packages",
+dependencies = [
+  # Developer tools
+  "mypy>=1.7.0, <1.8.0",
+  "pre-commit>=3.2.2, <3.3.0",
+  "pytest-mock>=3.14.0, <3.15.0",
+  "pytest-xdist>=3.6.0, <3.7.0",
+  "pytest>=8.0.0, < 9.0.0",
+  "PyYAML>=6.0, <7.0.0",
+  "tabulate>=0.8.9",
+  "types-PyYAML",
+  "types-python-dateutil",
+  "types-tabulate",
 ]