diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 660fa325..ca3b41dd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version:
+          - "3.10"
+          - "3.11"
         group: [1, 2, 3]
 
     steps:
diff --git a/README.rst b/README.rst
index f4509ee8..4da528d6 100644
--- a/README.rst
+++ b/README.rst
@@ -49,7 +49,7 @@ Introduction
 ------------
 
 VIP is a python package for high-contrast imaging of exoplanets and circumstellar disks.
-VIP is compatible with Python 3.8, 3.9, 3.10 and 3.11 (Python 2 compatibility dropped with VIP 0.9.9, and Python 3.7 compatibility dropped with VIP 1.4.3).
+VIP is compatible with Python 3.10 and 3.11 (Python 2 compatibility dropped with VIP 0.9.9, and Python 3.7 compatibility dropped with VIP 1.4.3).
 
 The goal of VIP is to integrate open-source, efficient, easy-to-use and
 well-documented implementations of high-contrast image processing algorithms to
diff --git a/docs/source/index.rst b/docs/source/index.rst
index e9a4b3e2..e0654d03 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -11,7 +11,7 @@ What is VIP?
 ------------
 ``VIP`` stands for Vortex Image Processing.
 It is a python package for high-contrast imaging of exoplanets and circumstellar disks.
-VIP is compatible with Python 3.8, 3.9, 3.10 and 3.11 (Python 2 compatibility dropped with VIP 0.9.9, and Python 3.7 compatibility dropped with VIP 1.4.3).
+VIP is compatible with Python 3.10 and 3.11 (Python 2 compatibility dropped with VIP 0.9.9, and Python 3.7 compatibility dropped with VIP 1.4.3).
 
 The goal of VIP is to integrate open-source, efficient, easy-to-use and
 well-documented implementations of high-contrast image processing algorithms to
diff --git a/pyproject.toml b/pyproject.toml
index b5737425..e83debe4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,15 +13,13 @@ authors = [
   { name = "Carlos Alberto Gomez Gonzalez" },
   { name = "Valentin Christiaens", email = "valentin.christiaens@uliege.be" },
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 classifiers = [
   "Intended Audience :: Science/Research",
   "Natural Language :: English",
   "Operating System :: MacOS :: MacOS X",
   "Operating System :: POSIX :: Linux",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Topic :: Scientific/Engineering :: Astronomy",
@@ -31,3 +29,10 @@ urls.Homepage = "https://github.com/vortex-exoplanet/VIP"
 [tool.setuptools]
 zip-safe = false
 packages.find = { namespaces = false }
+
+[tool.pytest.ini_options]
+filterwarnings = [
+  "error",
+  'ignore::ImportWarning',
+  'ignore:The fit may be unsuccessful:UserWarning', # noisy astropy warnings
+]
diff --git a/requirements-dev.txt b/requirements-dev.txt
index ac3e4c25..ea671301 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -5,7 +5,7 @@ myst-nb
 myst-parser
 pandoc
 pytest
-pytest-cov ~=2.6.0
+pytest-cov >=2.6.0
 pytest-split
 flake8
 flake8-bandit
diff --git a/vip_hci/fm/negfc_mcmc.py b/vip_hci/fm/negfc_mcmc.py
index c3cec21b..2f1dc1f9 100644
--- a/vip_hci/fm/negfc_mcmc.py
+++ b/vip_hci/fm/negfc_mcmc.py
@@ -65,8 +65,6 @@
 from .negfc_fmerit import get_values_optimize, get_mu_and_sigma
 from .utils_mcmc import gelman_rubin, autocorr_test
 from .utils_negfc import find_nearest
-import warnings
-warnings.filterwarnings("ignore", category=DeprecationWarning)
 
 
 def lnprior(param, bounds, force_rPA=False):
diff --git a/vip_hci/fm/negfc_simplex.py b/vip_hci/fm/negfc_simplex.py
index d5cede4d..1db41461 100644
--- a/vip_hci/fm/negfc_simplex.py
+++ b/vip_hci/fm/negfc_simplex.py
@@ -792,7 +792,7 @@ def firstguess(cube, angs, psfn, planets_xy_coord, ncomp=1, fwhm=4,
                                      verbose=False)
             if force_rPA:
                 r_0[i_planet], theta_0[i_planet] = (r_pre, theta_pre)
-                f_0[i_planet] = res.x[:]
+                f_0[i_planet] = res.x.item()
             else:
                 r_0[i_planet] = res.x[0]
                 theta_0[i_planet] = res.x[1]
diff --git a/vip_hci/fm/utils_mcmc.py b/vip_hci/fm/utils_mcmc.py
index fed8a995..c1545c58 100644
--- a/vip_hci/fm/utils_mcmc.py
+++ b/vip_hci/fm/utils_mcmc.py
@@ -11,8 +11,6 @@
            'gelman_rubin_from_chain']
 
 import numpy as np
-import warnings
-warnings.filterwarnings("ignore", category=DeprecationWarning)
 
 
 def gelman_rubin(x):