diff --git a/pkgs/development/interpreters/python/hooks/pytest-check-hook.sh b/pkgs/development/interpreters/python/hooks/pytest-check-hook.sh
index 0f708f888292b..0d1cd56e8c2d9 100644
--- a/pkgs/development/interpreters/python/hooks/pytest-check-hook.sh
+++ b/pkgs/development/interpreters/python/hooks/pytest-check-hook.sh
@@ -33,6 +33,10 @@ function pytestCheckPhase() {
 
     # Compose arguments
     args=" -m pytest"
+    if [ -n "$dontIgnoreWarnings-}" ]; then
+      args+=" -W ignore::DeprecationWarning -W ignore::FutureWarning -W ignore::UserWarning"
+    fi
+
     if [ -n "$disabledTests" ]; then
         disabledTestsString=$(_pytestComputeDisabledTestsString "${disabledTests[@]}")
       args+=" -k \""$disabledTestsString"\""
diff --git a/pkgs/development/python-modules/acoustics/default.nix b/pkgs/development/python-modules/acoustics/default.nix
index 174fd9c22376f..5634a446acf88 100644
--- a/pkgs/development/python-modules/acoustics/default.nix
+++ b/pkgs/development/python-modules/acoustics/default.nix
@@ -45,10 +45,6 @@ buildPythonPackage rec {
     echo "backend: ps" > $HOME/.matplotlib/matplotlibrc
   '';
 
-  pytestFlagsArray = [
-    "-Wignore::DeprecationWarning"
-  ];
-
   pythonImportsCheck = [ "acoustics" ];
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/aiohttp-jinja2/default.nix b/pkgs/development/python-modules/aiohttp-jinja2/default.nix
index 8e78784457ca4..2a956627453f9 100644
--- a/pkgs/development/python-modules/aiohttp-jinja2/default.nix
+++ b/pkgs/development/python-modules/aiohttp-jinja2/default.nix
@@ -35,11 +35,6 @@ buildPythonPackage rec {
       --replace " --cov=aiohttp_jinja2 --cov-report xml --cov-report html --cov-report term" ""
   '';
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   pythonImportsCheck = [
     "aiohttp_jinja2"
   ];
diff --git a/pkgs/development/python-modules/aiohttp-remotes/default.nix b/pkgs/development/python-modules/aiohttp-remotes/default.nix
index 66f81b1232980..288beee8b81ff 100644
--- a/pkgs/development/python-modules/aiohttp-remotes/default.nix
+++ b/pkgs/development/python-modules/aiohttp-remotes/default.nix
@@ -47,8 +47,6 @@ buildPythonPackage rec {
   ];
 
   pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
     "--asyncio-mode=auto"
   ];
 
diff --git a/pkgs/development/python-modules/aspectlib/default.nix b/pkgs/development/python-modules/aspectlib/default.nix
index 3f4a87e0a334e..ea7dd739c7db8 100644
--- a/pkgs/development/python-modules/aspectlib/default.nix
+++ b/pkgs/development/python-modules/aspectlib/default.nix
@@ -53,10 +53,6 @@ buildPythonPackage rec {
     tornado
   ];
 
-  pytestFlagsArray = [
-    "-W ignore::DeprecationWarning"
-  ];
-
   __darwinAllowLocalNetworking = true;
 
   meta = {
diff --git a/pkgs/development/python-modules/astroquery/default.nix b/pkgs/development/python-modules/astroquery/default.nix
index 610238559a2ce..67bee933c0da2 100644
--- a/pkgs/development/python-modules/astroquery/default.nix
+++ b/pkgs/development/python-modules/astroquery/default.nix
@@ -53,11 +53,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  pytestFlagsArray = [
-    # DeprecationWarning: 'cgi' is deprecated and slated for removal in Python 3.13
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   # Tests must be run in the build directory. The tests create files
   # in $HOME/.astropy so we need to set HOME to $TMPDIR.
   preCheck = ''
diff --git a/pkgs/development/python-modules/black/default.nix b/pkgs/development/python-modules/black/default.nix
index 73ce7f8d30fdd..50a0ea0594105 100644
--- a/pkgs/development/python-modules/black/default.nix
+++ b/pkgs/development/python-modules/black/default.nix
@@ -76,10 +76,6 @@ buildPythonPackage rec {
     parameterized
   ] ++ lib.flatten (lib.attrValues passthru.optional-dependencies);
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   preCheck = ''
     export PATH="$PATH:$out/bin"
 
diff --git a/pkgs/development/python-modules/build/default.nix b/pkgs/development/python-modules/build/default.nix
index 42c7786d78ae3..c1f279be318aa 100644
--- a/pkgs/development/python-modules/build/default.nix
+++ b/pkgs/development/python-modules/build/default.nix
@@ -71,11 +71,6 @@ buildPythonPackage rec {
         wheel
       ];
 
-      pytestFlagsArray = [
-        "-W"
-        "ignore::DeprecationWarning"
-      ];
-
       __darwinAllowLocalNetworking = true;
 
       disabledTests = [
diff --git a/pkgs/development/python-modules/cherrypy/default.nix b/pkgs/development/python-modules/cherrypy/default.nix
index 51c8b62c97168..a88c260ac139f 100644
--- a/pkgs/development/python-modules/cherrypy/default.nix
+++ b/pkgs/development/python-modules/cherrypy/default.nix
@@ -69,11 +69,6 @@ buildPythonPackage rec {
     export CI=true
   '';
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   disabledTests = [
     # Keyboard interrupt ends test suite run
     "KeyboardInterrupt"
diff --git a/pkgs/development/python-modules/cypherpunkpay/default.nix b/pkgs/development/python-modules/cypherpunkpay/default.nix
index 9bf5e8fcd85d2..5e1ff41ff09d1 100644
--- a/pkgs/development/python-modules/cypherpunkpay/default.nix
+++ b/pkgs/development/python-modules/cypherpunkpay/default.nix
@@ -73,11 +73,6 @@ buildPythonPackage rec {
     webtest
   ];
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   disabledTestPaths = [
     # performance test
     "tests/unit/tools/pbkdf2_test.py"
diff --git a/pkgs/development/python-modules/django-hijack/default.nix b/pkgs/development/python-modules/django-hijack/default.nix
index 427a8e2311398..92adeb7f0c81a 100644
--- a/pkgs/development/python-modules/django-hijack/default.nix
+++ b/pkgs/development/python-modules/django-hijack/default.nix
@@ -63,7 +63,6 @@ buildPythonPackage rec {
 
   pytestFlagsArray = [
     "--pyargs" "hijack"
-    "-W" "ignore::DeprecationWarning"
   ];
 
   # needed for npmDeps update
diff --git a/pkgs/development/python-modules/django-redis/default.nix b/pkgs/development/python-modules/django-redis/default.nix
index eeb845d095638..b2220b6bcefee 100644
--- a/pkgs/development/python-modules/django-redis/default.nix
+++ b/pkgs/development/python-modules/django-redis/default.nix
@@ -74,11 +74,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ] ++ lib.flatten (builtins.attrValues passthru.optional-dependencies);
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   disabledTests = [
     # ModuleNotFoundError: No module named 'test_cache_options'
     "test_custom_key_function"
diff --git a/pkgs/development/python-modules/fastapi/default.nix b/pkgs/development/python-modules/fastapi/default.nix
index 74f816d9b8a64..6132ffe002e15 100644
--- a/pkgs/development/python-modules/fastapi/default.nix
+++ b/pkgs/development/python-modules/fastapi/default.nix
@@ -94,12 +94,6 @@ buildPythonPackage rec {
   ] ++ passthru.optional-dependencies.all
   ++ python-jose.optional-dependencies.cryptography;
 
-  pytestFlagsArray = [
-    # ignoring deprecation warnings to avoid test failure from
-    # tests/test_tutorial/test_testing/test_tutorial001.py
-    "-W ignore::DeprecationWarning"
-  ];
-
   disabledTestPaths = [
     # Don't test docs and examples
     "docs_src"
diff --git a/pkgs/development/python-modules/flask-sqlalchemy/default.nix b/pkgs/development/python-modules/flask-sqlalchemy/default.nix
index 7f1775418f1c1..6cd972351b511 100644
--- a/pkgs/development/python-modules/flask-sqlalchemy/default.nix
+++ b/pkgs/development/python-modules/flask-sqlalchemy/default.nix
@@ -44,11 +44,6 @@ buildPythonPackage rec {
     "test_persist_selectable"
   ];
 
-  pytestFlagsArray = lib.optionals (pythonAtLeast "3.12") [
-    # datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version.
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   pythonImportsCheck = [
     "flask_sqlalchemy"
   ];
diff --git a/pkgs/development/python-modules/flask-wtf/default.nix b/pkgs/development/python-modules/flask-wtf/default.nix
index a106945df060c..ca213b8e14749 100644
--- a/pkgs/development/python-modules/flask-wtf/default.nix
+++ b/pkgs/development/python-modules/flask-wtf/default.nix
@@ -43,10 +43,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   meta = with lib; {
     description = "Simple integration of Flask and WTForms.";
     license = licenses.bsd3;
diff --git a/pkgs/development/python-modules/flax/default.nix b/pkgs/development/python-modules/flax/default.nix
index b906ba9d4322f..c975d677b7701 100644
--- a/pkgs/development/python-modules/flax/default.nix
+++ b/pkgs/development/python-modules/flax/default.nix
@@ -72,11 +72,6 @@ buildPythonPackage rec {
     tensorflow
   ];
 
-  pytestFlagsArray = [
-    "-W ignore::FutureWarning"
-    "-W ignore::DeprecationWarning"
-  ];
-
   disabledTestPaths = [
     # Docs test, needs extra deps + we're not interested in it.
     "docs/_ext/codediff_test.py"
diff --git a/pkgs/development/python-modules/globus-sdk/default.nix b/pkgs/development/python-modules/globus-sdk/default.nix
index 6ad0646401a08..048762d63f26e 100644
--- a/pkgs/development/python-modules/globus-sdk/default.nix
+++ b/pkgs/development/python-modules/globus-sdk/default.nix
@@ -42,11 +42,6 @@ buildPythonPackage rec {
     --replace "pyjwt[crypto]>=2.0.0,<3.0.0" "pyjwt[crypto]>=2.0.0,<3.0.0"
   '';
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   pythonImportsCheck = [
     "globus_sdk"
   ];
diff --git a/pkgs/development/python-modules/grpc-google-iam-v1/default.nix b/pkgs/development/python-modules/grpc-google-iam-v1/default.nix
index 98f550a047f68..3e6f874de3dd7 100644
--- a/pkgs/development/python-modules/grpc-google-iam-v1/default.nix
+++ b/pkgs/development/python-modules/grpc-google-iam-v1/default.nix
@@ -37,11 +37,6 @@ buildPythonPackage rec {
     "google.iam.v1"
   ];
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   meta = with lib; {
     description = "GRPC library for the google-iam-v1 service";
     homepage = "https://github.com/googleapis/python-grpc-google-iam-v1";
diff --git a/pkgs/development/python-modules/httpx/default.nix b/pkgs/development/python-modules/httpx/default.nix
index 9641597a516d0..4b200f8e476b2 100644
--- a/pkgs/development/python-modules/httpx/default.nix
+++ b/pkgs/development/python-modules/httpx/default.nix
@@ -93,7 +93,6 @@ buildPythonPackage rec {
   '';
 
   pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
     "-W" "ignore::trio.TrioDeprecationWarning"
   ];
 
diff --git a/pkgs/development/python-modules/itsdangerous/default.nix b/pkgs/development/python-modules/itsdangerous/default.nix
index cfc364a4a3997..3810eabf46c71 100644
--- a/pkgs/development/python-modules/itsdangerous/default.nix
+++ b/pkgs/development/python-modules/itsdangerous/default.nix
@@ -22,10 +22,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   meta = with lib; {
     description = "Safely pass data to untrusted environments and back";
     homepage = "https://itsdangerous.palletsprojects.com";
diff --git a/pkgs/development/python-modules/jax/default.nix b/pkgs/development/python-modules/jax/default.nix
index d41987c9a539e..0e2565770b496 100644
--- a/pkgs/development/python-modules/jax/default.nix
+++ b/pkgs/development/python-modules/jax/default.nix
@@ -77,7 +77,6 @@ buildPythonPackage rec {
   # anyhow.
   pytestFlagsArray = [
     "--numprocesses=4"
-    "-W ignore::DeprecationWarning"
     "tests/"
   ];
 
diff --git a/pkgs/development/python-modules/jupyter-collaboration/default.nix b/pkgs/development/python-modules/jupyter-collaboration/default.nix
index b131e347393c9..f061f3c417292 100644
--- a/pkgs/development/python-modules/jupyter-collaboration/default.nix
+++ b/pkgs/development/python-modules/jupyter-collaboration/default.nix
@@ -60,10 +60,6 @@ buildPythonPackage rec {
     "jupyter_collaboration"
   ];
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   preCheck = ''
     export HOME=$TEMP
   '';
diff --git a/pkgs/development/python-modules/jupyter-server/default.nix b/pkgs/development/python-modules/jupyter-server/default.nix
index 77993d24fd2c8..752c5b3a59174 100644
--- a/pkgs/development/python-modules/jupyter-server/default.nix
+++ b/pkgs/development/python-modules/jupyter-server/default.nix
@@ -80,10 +80,6 @@ buildPythonPackage rec {
     flaky
   ];
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   preCheck = ''
     export HOME=$(mktemp -d)
     export PATH=$out/bin:$PATH
diff --git a/pkgs/development/python-modules/lightning-utilities/default.nix b/pkgs/development/python-modules/lightning-utilities/default.nix
index 53b0941fc36bb..013c68d93d95e 100644
--- a/pkgs/development/python-modules/lightning-utilities/default.nix
+++ b/pkgs/development/python-modules/lightning-utilities/default.nix
@@ -61,11 +61,6 @@ buildPythonPackage rec {
     "src/lightning_utilities/install/requirements.py"
   ];
 
-  pytestFlagsArray = [
-    # warns about distutils removal in python 3.12
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   meta = with lib; {
     changelog = "https://github.com/Lightning-AI/utilities/releases/tag/v${version}";
     description = "Common Python utilities and GitHub Actions in Lightning Ecosystem";
diff --git a/pkgs/development/python-modules/marshmallow-dataclass/default.nix b/pkgs/development/python-modules/marshmallow-dataclass/default.nix
index 2883b6b31adde..7cd895fd342c4 100644
--- a/pkgs/development/python-modules/marshmallow-dataclass/default.nix
+++ b/pkgs/development/python-modules/marshmallow-dataclass/default.nix
@@ -35,12 +35,6 @@ buildPythonPackage rec {
     typeguard
   ];
 
-  pytestFlagsArray = [
-    # DeprecationWarning: The distutils package is deprecated and slated for removal in Python 3.12.
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   disabledTests = lib.optionals (pythonAtLeast "3.10") [
     # TypeError: UserId is not a dataclass and cannot be turned into one.
     "test_newtype"
diff --git a/pkgs/development/python-modules/notebook/default.nix b/pkgs/development/python-modules/notebook/default.nix
index f10bbe9dc1faf..ee66f3b013c8c 100644
--- a/pkgs/development/python-modules/notebook/default.nix
+++ b/pkgs/development/python-modules/notebook/default.nix
@@ -50,10 +50,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   env = {
     JUPYTER_PLATFORM_DIRS = 1;
   };
diff --git a/pkgs/development/python-modules/omegaconf/default.nix b/pkgs/development/python-modules/omegaconf/default.nix
index 8ee54d3c6925e..34cb764ab409c 100644
--- a/pkgs/development/python-modules/omegaconf/default.nix
+++ b/pkgs/development/python-modules/omegaconf/default.nix
@@ -66,11 +66,6 @@ buildPythonPackage rec {
     "omegaconf"
   ];
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   meta = with lib; {
     description = "Framework for configuring complex applications";
     homepage = "https://github.com/omry/omegaconf";
diff --git a/pkgs/development/python-modules/openai/default.nix b/pkgs/development/python-modules/openai/default.nix
index 78ace71a35756..dab58b533265b 100644
--- a/pkgs/development/python-modules/openai/default.nix
+++ b/pkgs/development/python-modules/openai/default.nix
@@ -74,10 +74,6 @@ buildPythonPackage rec {
     dirty-equals
   ];
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   disabledTests = [
     # Tests make network requests
     "test_streaming_response"
diff --git a/pkgs/development/python-modules/openpyxl/default.nix b/pkgs/development/python-modules/openpyxl/default.nix
index 94252131d9a00..dc839d87a27ec 100644
--- a/pkgs/development/python-modules/openpyxl/default.nix
+++ b/pkgs/development/python-modules/openpyxl/default.nix
@@ -41,10 +41,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
   disabledTests = [
     # Tests broken since lxml 2.12; https://foss.heptapod.net/openpyxl/openpyxl/-/issues/2116
     "test_read"
diff --git a/pkgs/development/python-modules/param/default.nix b/pkgs/development/python-modules/param/default.nix
index 638a3182ca1b5..f6bbbf3b78ffb 100644
--- a/pkgs/development/python-modules/param/default.nix
+++ b/pkgs/development/python-modules/param/default.nix
@@ -40,10 +40,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   pythonImportsCheck = [
     "param"
   ];
diff --git a/pkgs/development/python-modules/pelican/default.nix b/pkgs/development/python-modules/pelican/default.nix
index 71682cd62c41b..d25b92ac456e9 100644
--- a/pkgs/development/python-modules/pelican/default.nix
+++ b/pkgs/development/python-modules/pelican/default.nix
@@ -98,11 +98,6 @@ buildPythonPackage rec {
     pandoc
   ];
 
-  pytestFlagsArray = [
-    # DeprecationWarning: 'jinja2.Markup' is deprecated and...
-    "-W ignore::DeprecationWarning"
-  ];
-
   disabledTests = [
     # AssertionError
     "test_basic_generation_works"
diff --git a/pkgs/development/python-modules/pydantic-extra-types/default.nix b/pkgs/development/python-modules/pydantic-extra-types/default.nix
index 539873a1a4be2..a1bc50ed9a98e 100644
--- a/pkgs/development/python-modules/pydantic-extra-types/default.nix
+++ b/pkgs/development/python-modules/pydantic-extra-types/default.nix
@@ -41,10 +41,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ] ++ passthru.optional-dependencies.all;
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   meta = with lib; {
     description = "Extra Pydantic types";
     homepage = "https://github.com/pydantic/pydantic-extra-types";
diff --git a/pkgs/development/python-modules/pylint/default.nix b/pkgs/development/python-modules/pylint/default.nix
index 948b2afc5a15b..4e696afec96bc 100644
--- a/pkgs/development/python-modules/pylint/default.nix
+++ b/pkgs/development/python-modules/pylint/default.nix
@@ -63,11 +63,6 @@ buildPythonPackage rec {
   ];
 
   pytestFlagsArray = [
-    # DeprecationWarning: pyreverse will drop support for resolving and
-    # displaying implemented interfaces in pylint 3.0. The
-    # implementation relies on the '__implements__'  attribute proposed
-    # in PEP 245, which was rejected in 2006.
-    "-W" "ignore::DeprecationWarning"
     "-v"
   ];
 
diff --git a/pkgs/development/python-modules/pytest-benchmark/default.nix b/pkgs/development/python-modules/pytest-benchmark/default.nix
index dc2c271371691..443b9852587ba 100644
--- a/pkgs/development/python-modules/pytest-benchmark/default.nix
+++ b/pkgs/development/python-modules/pytest-benchmark/default.nix
@@ -80,10 +80,6 @@ buildPythonPackage rec {
     pytest-xdist
   ] ++ lib.flatten (lib.attrValues passthru.optional-dependencies);
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   preCheck = ''
     export PATH="$out/bin:$PATH"
   '';
diff --git a/pkgs/development/python-modules/pytest-regressions/default.nix b/pkgs/development/python-modules/pytest-regressions/default.nix
index e9950b01fdf18..024d7c4a8c6cf 100644
--- a/pkgs/development/python-modules/pytest-regressions/default.nix
+++ b/pkgs/development/python-modules/pytest-regressions/default.nix
@@ -46,10 +46,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   disabledTestPathss = lib.optionals (pythonAtLeast "3.12") [
     # AttributeError: partially initialized module 'pandas' has no attribute '_pandas_datetime_CAPI' (most likely due to a circular import)
     "tests/test_num_regression.py"
diff --git a/pkgs/development/python-modules/pytest-subprocess/default.nix b/pkgs/development/python-modules/pytest-subprocess/default.nix
index 966ca16dd0ba3..c2381b63fc2de 100644
--- a/pkgs/development/python-modules/pytest-subprocess/default.nix
+++ b/pkgs/development/python-modules/pytest-subprocess/default.nix
@@ -43,10 +43,6 @@ buildPythonPackage rec {
     anyio
   ];
 
-  pytestFlagsArray = [
-    "-W ignore::DeprecationWarning"
-  ];
-
   meta = with lib; {
     description = "A plugin to fake subprocess for pytest";
     homepage = "https://github.com/aklajnert/pytest-subprocess";
diff --git a/pkgs/development/python-modules/python-docx/default.nix b/pkgs/development/python-modules/python-docx/default.nix
index 6a5c01d216da7..75c8c02debd39 100644
--- a/pkgs/development/python-modules/python-docx/default.nix
+++ b/pkgs/development/python-modules/python-docx/default.nix
@@ -52,11 +52,6 @@ buildPythonPackage rec {
     "it_accepts_unicode_providing_there_is_no_encoding_declaration"
   ];
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   meta = with lib; {
     description = "Create and update Microsoft Word .docx files";
     homepage = "https://python-docx.readthedocs.io/";
diff --git a/pkgs/development/python-modules/ruyaml/default.nix b/pkgs/development/python-modules/ruyaml/default.nix
index 4131200f2276a..e8876e4bd2209 100644
--- a/pkgs/development/python-modules/ruyaml/default.nix
+++ b/pkgs/development/python-modules/ruyaml/default.nix
@@ -41,10 +41,6 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   pythonImportsCheck = [
     "ruyaml"
   ];
diff --git a/pkgs/development/python-modules/starlette/default.nix b/pkgs/development/python-modules/starlette/default.nix
index 4f248044cc7f7..d864ea146be66 100644
--- a/pkgs/development/python-modules/starlette/default.nix
+++ b/pkgs/development/python-modules/starlette/default.nix
@@ -64,7 +64,6 @@ buildPythonPackage rec {
   ] ++ lib.flatten (lib.attrValues passthru.optional-dependencies);
 
   pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
     "-W" "ignore::trio.TrioDeprecationWarning"
   ];
 
diff --git a/pkgs/development/python-modules/sunpy/default.nix b/pkgs/development/python-modules/sunpy/default.nix
index 732828e908ac1..745e0ee7a9589 100644
--- a/pkgs/development/python-modules/sunpy/default.nix
+++ b/pkgs/development/python-modules/sunpy/default.nix
@@ -144,11 +144,6 @@ buildPythonPackage rec {
     "sunpy/io/setup_package.py"
   ];
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   # Wants a configuration file
   # pythonImportsCheck = [
   #   "sunpy"
diff --git a/pkgs/development/python-modules/tqdm/default.nix b/pkgs/development/python-modules/tqdm/default.nix
index 2cd490e844e5a..ab5cc8a0272d3 100644
--- a/pkgs/development/python-modules/tqdm/default.nix
+++ b/pkgs/development/python-modules/tqdm/default.nix
@@ -46,11 +46,6 @@ buildPythonPackage rec {
     # pandas is not supported on i686 or risc-v
     lib.optional (!stdenv.isi686 && !stdenv.hostPlatform.isRiscV) pandas;
 
-  pytestFlagsArray = [
-    "-W" "ignore::FutureWarning"
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   # Remove performance testing.
   # Too sensitive for on Hydra.
   disabledTests = [
diff --git a/pkgs/development/python-modules/trio/default.nix b/pkgs/development/python-modules/trio/default.nix
index 648f91f07b9ba..e4a832cd5a0fd 100644
--- a/pkgs/development/python-modules/trio/default.nix
+++ b/pkgs/development/python-modules/trio/default.nix
@@ -99,10 +99,6 @@ buildPythonPackage rec {
     "trio/_tests/tools/test_gen_exports.py"
   ];
 
-  pytestFlagsArray = [
-    "-W" "ignore::DeprecationWarning"
-  ];
-
   meta = {
     description = "An async/await-native I/O library for humans and snake people";
     homepage = "https://github.com/python-trio/trio";
diff --git a/pkgs/development/python-modules/wheel-inspect/default.nix b/pkgs/development/python-modules/wheel-inspect/default.nix
index 17195fa67daee..bc319bd87e847 100644
--- a/pkgs/development/python-modules/wheel-inspect/default.nix
+++ b/pkgs/development/python-modules/wheel-inspect/default.nix
@@ -61,11 +61,6 @@ buildPythonPackage rec {
     "wheel_inspect"
   ];
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   meta = with lib; {
     description = "Extract information from wheels";
     homepage = "https://github.com/jwodder/wheel-inspect";
diff --git a/pkgs/development/tools/aws-sam-cli/default.nix b/pkgs/development/tools/aws-sam-cli/default.nix
index 5ab92dbe8b18d..b667f9e028732 100644
--- a/pkgs/development/tools/aws-sam-cli/default.nix
+++ b/pkgs/development/tools/aws-sam-cli/default.nix
@@ -105,9 +105,6 @@ python3.pkgs.buildPythonApplication rec {
 
   pytestFlagsArray = [
     "tests"
-    # Disable warnings
-    "-W"
-    "ignore::DeprecationWarning"
   ];
 
   disabledTestPaths = [
diff --git a/pkgs/tools/admin/awscli2/default.nix b/pkgs/tools/admin/awscli2/default.nix
index 8c9ec21b1bff6..3e51b5d436393 100644
--- a/pkgs/tools/admin/awscli2/default.nix
+++ b/pkgs/tools/admin/awscli2/default.nix
@@ -111,10 +111,6 @@ with py.pkgs; buildPythonApplication rec {
     export HOME=$(mktemp -d)
   '';
 
-  pytestFlagsArray = [
-    "-Wignore::DeprecationWarning"
-  ];
-
   disabledTestPaths = [
     # Integration tests require networking
     "tests/integration"
diff --git a/pkgs/tools/security/maigret/default.nix b/pkgs/tools/security/maigret/default.nix
index f2d706bfe5105..e5adc758f27f9 100644
--- a/pkgs/tools/security/maigret/default.nix
+++ b/pkgs/tools/security/maigret/default.nix
@@ -80,11 +80,6 @@ python3.pkgs.buildPythonApplication rec {
   pythonRelaxDeps = true;
   pythonRemoveDeps = [ "future-annotations" ];
 
-  pytestFlagsArray = [
-    # DeprecationWarning: There is no current event loop
-    "-W ignore::DeprecationWarning"
-  ];
-
   disabledTests = [
     # Tests require network access
     "test_extract_ids_from_page"