diff --git a/Makefile b/Makefile
index b3a6294..815840e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,5 @@
-format: black flake8 pylint ruff
+format: black ruff
+lint: flake8 pylint
 
 black:
 	black ./lib || true
@@ -10,7 +11,7 @@ flake8:
 
 pylint:
 	pylint ./lib || true
-	pylint --disable=E0401,W0621,R0913,R0917 ./tests || true
+	pylint ./tests || true
 
 ruff:
 	ruff check --fix ./lib || true
diff --git a/lib/models/aerosurfaces.py b/lib/models/aerosurfaces.py
index aec87f0..68d8e41 100644
--- a/lib/models/aerosurfaces.py
+++ b/lib/models/aerosurfaces.py
@@ -1,13 +1,13 @@
 from enum import Enum
 from typing import Optional, Tuple, List, Union
-from pydantic import BaseModel
+from pydantic import BaseModel, Field
 
 
 class Parachute(BaseModel):
     name: str
-    cd_s: float
-    sampling_rate: int
-    lag: float
+    cd_s: float = Field(..., ge=0, description="Must be non-negative")
+    sampling_rate: float = Field(..., gt=0, description="Must be positive")
+    lag: float = Field(..., ge=0, description="Must be non-negative")
     trigger: Union[str, float]
     noise: Tuple[float, float, float]
 
diff --git a/pyproject.toml b/pyproject.toml
index 570738d..a341da2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,6 +43,11 @@ disable = """
     broad-exception-caught,
     raise-missing-from,
     too-many-instance-attributes,
+    redefined-outer-name,
+    import-error,
+    too-many-arguments,
+    redefined-outer-name,
+    too-many-positional-arguments,
 """
 
 [tool.ruff]
diff --git a/tests/test_routes/test_rockets_route.py b/tests/test_routes/test_rockets_route.py
index 2a3afb6..8583e4b 100644
--- a/tests/test_routes/test_rockets_route.py
+++ b/tests/test_routes/test_rockets_route.py
@@ -162,7 +162,7 @@ def stub_parachute():
     parachute = Parachute(
         name='parachute',
         cd_s=0,
-        sampling_rate=0,
+        sampling_rate=1,
         lag=0,
         trigger='trigger',
         noise=(0, 0, 0),