diff --git a/fix-tests.patch b/fix-tests.patch
index c91d74c..32a5f3b 100644
--- a/fix-tests.patch
+++ b/fix-tests.patch
@@ -1,4 +1,4 @@
-From f427195a0e23346ed11b21bba5b22b291881a894 Mon Sep 17 00:00:00 2001
+From af734d392fa9fbb6fca3ea7c9fdbeff0297e89df Mon Sep 17 00:00:00 2001
 From: Lumir Balhar <lbalhar@redhat.com>
 Date: Tue, 10 Jan 2023 08:34:25 +0100
 Subject: [PATCH] fix tests
@@ -10,28 +10,28 @@ Subject: [PATCH] fix tests
  3 files changed, 5 insertions(+), 36 deletions(-)
 
 diff --git a/pyproject.toml b/pyproject.toml
-index d064329..e33c770 100644
+index 4f9836d..bae6776 100644
 --- a/pyproject.toml
 +++ b/pyproject.toml
-@@ -73,9 +73,6 @@ optional-dependencies.docs = [
+@@ -74,9 +74,6 @@ optional-dependencies.docs = [
  ]
  optional-dependencies.testing = [
    "build[virtualenv]>=1.2.2",
 -  "covdefaults>=2.3",
 -  "detect-test-pollution>=1.2",
--  "devpi-process>=1",
-   "diff-cover>=9.1.1",
+-  "devpi-process>=1.0.2",
+   "diff-cover>=9.2",
    "distlib>=0.3.8",
    "flaky>=3.8.1",
-@@ -83,7 +80,6 @@ optional-dependencies.testing = [
+@@ -84,7 +81,6 @@ optional-dependencies.testing = [
    "hatchling>=1.25",
    "psutil>=6",
-   "pytest>=8.3.2",
+   "pytest>=8.3.3",
 -  "pytest-cov>=5",
    "pytest-mock>=3.14",
    "pytest-xdist>=3.6.1",
    "re-assert>=1.1",
-@@ -191,9 +187,6 @@ report.omit = [
+@@ -192,9 +188,6 @@ report.omit = [
    "tests/type_check/*",
  ]
  run.parallel = true
@@ -120,5 +120,5 @@ index 5b2b652..7657c2e 100644
      ini = "[tox]\nrequires=demo-pkg-inline\n[testenv]\npackage=skip\n[testenv:.tox]\nplatform=wrong_platform"
      proj = tox_project({"tox.ini": ini})
 -- 
-2.46.2
+2.46.0
 
diff --git a/python-tox.spec b/python-tox.spec
index ca3cb01..fdad42b 100644
--- a/python-tox.spec
+++ b/python-tox.spec
@@ -20,7 +20,7 @@
 %undefine _py3_shebang_s
 
 Name:           python-tox
-Version:        4.20.0
+Version:        4.21.0
 Release:        %autorelease
 Summary:        Virtualenv-based automation of test activities
 
diff --git a/sources b/sources
index a618d5e..d60edd4 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (tox-4.20.0.tar.gz) = c4b9a03a62c7d1993a8b027cd2f8f22fc033fa802176f20b0daeda84d528c5e8618ae9781f04c3d8820d9f49c5786d56b96dd596e95e489ac372631d61425616
+SHA512 (tox-4.21.0.tar.gz) = e4a5d56ea2b2865a5a114cb77bf0e25d0504f9b652cf086d803170ba3ef46731a55ec0a4c591e562cd31b13d408d97618dcf21f60da28faf1d7ce6a955e1fc71