diff --git a/crow/__init__.py b/crow/__init__.py
index a581f13..72b4e73 100644
--- a/crow/__init__.py
+++ b/crow/__init__.py
@@ -8,4 +8,4 @@
 from .recipes.binned_grid import GridBinnedClusterRecipe
 from .recipes.binned_parent import BinnedClusterRecipe
 
-__version__ = "0.7.0"
+__version__ = "1.0.0"
diff --git a/crow/cluster_modules/shear_profile.py b/crow/cluster_modules/shear_profile.py
index fc439e8..a886bde 100644
--- a/crow/cluster_modules/shear_profile.py
+++ b/crow/cluster_modules/shear_profile.py
@@ -87,7 +87,7 @@ def cluster_concentration(self):
 
     @cluster_concentration.setter
     def cluster_concentration(self, value):
-        if value < 0:
+        if value is not None and value < 0:
             value = None
         self.parameters["cluster_concentration"] = value
 
diff --git a/pyproject.toml b/pyproject.toml
index 1baf741..c9328f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "desc-crow"
-version = "0.5.2"
+dynamic = ["version"]
 description = "Cluster Reconstruction of Observables Workbench"
 readme = "README.md"
 license = "BSD-3-Clause"
@@ -47,3 +47,6 @@ target-version = ['py310']
 
 [tool.isort]
 profile = "black"
+
+[tool.setuptools.dynamic]
+version = {attr = "crow.__version__"}
diff --git a/tests/conftest.py b/tests/conftest.py
index 8023f96..23132f1 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -10,7 +10,6 @@
 import pytest
 
 # Ensure we can import from the main crow/ package
-sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
 
 
 def pytest_addoption(parser):
diff --git a/tests/test_cluster_abundance.py b/tests/test_cluster_abundance.py
index 3aba83f..953d200 100644
--- a/tests/test_cluster_abundance.py
+++ b/tests/test_cluster_abundance.py
@@ -7,8 +7,6 @@
 import pyccl
 import pytest
 
-sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
 from crow import ClusterAbundance
 
 _TEST_COSMO = pyccl.CosmologyVanillaLCDM()
diff --git a/tests/test_cluster_integrators.py b/tests/test_cluster_integrators.py
index 2f1d74a..0fa4e9f 100644
--- a/tests/test_cluster_integrators.py
+++ b/tests/test_cluster_integrators.py
@@ -7,8 +7,6 @@
 import numpy.typing as npt
 import pytest
 
-sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
 from crow.integrator.numcosmo_integrator import NumCosmoIntegrator
 from crow.integrator.scipy_integrator import ScipyIntegrator
 
diff --git a/tests/test_cluster_kernels.py b/tests/test_cluster_kernels.py
index b9253d5..75c89c5 100644
--- a/tests/test_cluster_kernels.py
+++ b/tests/test_cluster_kernels.py
@@ -6,8 +6,6 @@
 import numpy as np
 import pytest
 
-sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
 from crow import completeness_models, kernel, purity_models
 
 
diff --git a/tests/test_cluster_mass_richness.py b/tests/test_cluster_mass_richness.py
index b57a446..e14abe1 100644
--- a/tests/test_cluster_mass_richness.py
+++ b/tests/test_cluster_mass_richness.py
@@ -9,8 +9,6 @@
 from hypothesis.strategies import floats
 from scipy.integrate import quad
 
-sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
 from crow import mass_proxy
 from crow.cluster_modules.mass_proxy.murata import MurataModel
 
diff --git a/tests/test_cluster_parameters.py b/tests/test_cluster_parameters.py
index 27b2073..a629c31 100644
--- a/tests/test_cluster_parameters.py
+++ b/tests/test_cluster_parameters.py
@@ -6,8 +6,6 @@
 import numpy as np
 import pytest
 
-sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
 from crow.cluster_modules.parameters import Parameters
 
 
diff --git a/tests/test_cluster_shear_profile.py b/tests/test_cluster_shear_profile.py
index 1d966b9..447e78f 100644
--- a/tests/test_cluster_shear_profile.py
+++ b/tests/test_cluster_shear_profile.py
@@ -8,8 +8,6 @@
 import pytest
 from scipy.stats import norm
 
-sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
 from crow import ClusterShearProfile
 
 _TEST_COSMO = pyccl.CosmologyVanillaLCDM()
diff --git a/tests/test_recipe_binned_counts.py b/tests/test_recipe_binned_counts.py
index e657f5f..42138b1 100644
--- a/tests/test_recipe_binned_counts.py
+++ b/tests/test_recipe_binned_counts.py
@@ -10,9 +10,6 @@
 from hypothesis.strategies import floats
 from scipy.integrate import dblquad, simpson
 
-sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
-
 from crow import (
     ClusterAbundance,
     completeness_models,
diff --git a/tests/test_recipe_binned_parent.py b/tests/test_recipe_binned_parent.py
index 5f2677f..34be85b 100644
--- a/tests/test_recipe_binned_parent.py
+++ b/tests/test_recipe_binned_parent.py
@@ -9,9 +9,6 @@
 from hypothesis import HealthCheck, given, settings
 from hypothesis.strategies import floats
 
-sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
-
 from crow import ClusterAbundance, kernel, mass_proxy, purity_models
 from crow.integrator.numcosmo_integrator import NumCosmoIntegrator
 from crow.properties import ClusterProperty
diff --git a/tests/test_recipe_binned_shear_profile.py b/tests/test_recipe_binned_shear_profile.py
index 2e4e559..7884905 100644
--- a/tests/test_recipe_binned_shear_profile.py
+++ b/tests/test_recipe_binned_shear_profile.py
@@ -7,8 +7,6 @@
 import pyccl
 import pytest
 
-sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
 from crow import (
     ClusterAbundance,
     ClusterShearProfile,