diff --git a/pyproject-rpm-macros.spec b/pyproject-rpm-macros.spec
index 8698f6b..0f4e3ec 100644
--- a/pyproject-rpm-macros.spec
+++ b/pyproject-rpm-macros.spec
@@ -12,7 +12,7 @@ License:        MIT
 #   Increment Y and reset Z when new macros or features are added
 #   Increment Z when this is a bugfix or a cosmetic change
 # Dropping support for EOL Fedoras is *not* considered a breaking change
-Version:        1.5.0
+Version:        1.5.1
 Release:        1%{?dist}
 
 # Macro files
@@ -129,6 +129,9 @@ export HOSTNAME="rpmbuild"  # to speedup tox in network-less mock, see rhbz#1856
 %license LICENSE
 
 %changelog
+* Fri Jan 13 2023 Miro Hrončok <mhroncok@redhat.com> - 1.5.1-1
+- Adjusts %%pyproject_buildrequires tests for tox 4
+
 * Mon Nov 28 2022 Miro Hrončok <mhroncok@redhat.com> - 1.5.0-1
 - Use %%py3_test_envvars in %%tox when available
 
diff --git a/pyproject_buildrequires_testcases.yaml b/pyproject_buildrequires_testcases.yaml
index 50f9d4e..75934df 100644
--- a/pyproject_buildrequires_testcases.yaml
+++ b/pyproject_buildrequires_testcases.yaml
@@ -413,14 +413,24 @@ Tox dependencies:
         toxdep2
     commands =
         true
-  expected: |
-    python3dist(setuptools) >= 40.8
-    python3dist(wheel)
-    python3dist(wheel)
-    python3dist(tox-current-env) >= 0.0.6
-    python3dist(toxdep1)
-    python3dist(toxdep2)
-    python3dist(inst)
+  expected:
+    - |  # tox 3
+      python3dist(setuptools) >= 40.8
+      python3dist(wheel)
+      python3dist(wheel)
+      python3dist(tox-current-env) >= 0.0.6
+      python3dist(toxdep1)
+      python3dist(toxdep2)
+      python3dist(inst)
+    - |  # tox 4
+      python3dist(setuptools) >= 40.8
+      python3dist(wheel)
+      python3dist(wheel)
+      python3dist(tox-current-env) >= 0.0.6
+      python3dist(tox)
+      python3dist(toxdep1)
+      python3dist(toxdep2)
+      python3dist(inst)
   result: 0
 
 Tox extras:
@@ -455,20 +465,36 @@ Tox extras:
         extra1
     commands =
         true
-  expected: |
-    python3dist(setuptools) >= 40.8
-    python3dist(wheel)
-    python3dist(wheel)
-    python3dist(tox-current-env) >= 0.0.6
-    python3dist(toxdep)
-    python3dist(inst)
-    python3dist(dep11) > 11.0
-    python3dist(dep12)
-    python3dist(dep21)
-    python3dist(dep22)
-    python3dist(dep23)
-    python3dist(extra-dep)
-    python3dist(extra-dep[extra_dep])
+  expected:
+    - |  # tox 3
+      python3dist(setuptools) >= 40.8
+      python3dist(wheel)
+      python3dist(wheel)
+      python3dist(tox-current-env) >= 0.0.6
+      python3dist(toxdep)
+      python3dist(inst)
+      python3dist(dep11) > 11.0
+      python3dist(dep12)
+      python3dist(dep21)
+      python3dist(dep22)
+      python3dist(dep23)
+      python3dist(extra-dep)
+      python3dist(extra-dep[extra_dep])
+    - |  # tox 4
+      python3dist(setuptools) >= 40.8
+      python3dist(wheel)
+      python3dist(wheel)
+      python3dist(tox-current-env) >= 0.0.6
+      python3dist(tox)
+      python3dist(toxdep)
+      python3dist(inst)
+      python3dist(dep11) > 11.0
+      python3dist(dep12)
+      python3dist(dep21)
+      python3dist(dep22)
+      python3dist(dep23)
+      python3dist(extra-dep)
+      python3dist(extra-dep[extra_dep])
   result: 0
 
 Tox provision unsatisfied:
@@ -496,14 +522,24 @@ Tox provision unsatisfied:
     deps =
         toxdep1
         toxdep2
-  expected: |
-    python3dist(setuptools) >= 40.8
-    python3dist(wheel)
-    python3dist(wheel)
-    python3dist(tox-current-env) >= 0.0.6
-    python3dist(tox) >= 3.999
-    python3dist(setuptools) > 40.0
-    python3dist(wheel) > 2.0
+  expected:
+    - |  # tox 3
+      python3dist(setuptools) >= 40.8
+      python3dist(wheel)
+      python3dist(wheel)
+      python3dist(tox-current-env) >= 0.0.6
+      python3dist(tox) >= 3.999
+      python3dist(setuptools) > 40.0
+      python3dist(wheel) > 2.0
+    - |  # tox 4
+      python3dist(setuptools) >= 40.8
+      python3dist(wheel)
+      python3dist(wheel)
+      python3dist(tox-current-env) >= 0.0.6
+      python3dist(tox) >= 3.999
+      python3dist(setuptools) > 40.0
+      python3dist(wheel) > 2.0
+      python3dist(tox) >= 3.999
   result: 0
 
 Tox provision satisfied:
@@ -530,16 +566,27 @@ Tox provision satisfied:
     deps =
         toxdep1
         toxdep2
-  expected: |
-    python3dist(setuptools) >= 40.8
-    python3dist(wheel)
-    python3dist(wheel)
-    python3dist(tox-current-env) >= 0.0.6
-    python3dist(tox) >= 3.5
-    python3dist(setuptools) > 40.0
-    python3dist(toxdep1)
-    python3dist(toxdep2)
-    python3dist(inst)
+  expected:
+    - |  # tox 3
+      python3dist(setuptools) >= 40.8
+      python3dist(wheel)
+      python3dist(wheel)
+      python3dist(tox-current-env) >= 0.0.6
+      python3dist(tox) >= 3.5
+      python3dist(setuptools) > 40.0
+      python3dist(toxdep1)
+      python3dist(toxdep2)
+      python3dist(inst)
+    - |  # tox 4
+      python3dist(setuptools) >= 40.8
+      python3dist(wheel)
+      python3dist(wheel)
+      python3dist(tox-current-env) >= 0.0.6
+      python3dist(setuptools) > 40.0
+      python3dist(tox) >= 3.5
+      python3dist(toxdep1)
+      python3dist(toxdep2)
+      python3dist(inst)
   result: 0
 
 Default build system, unmet deps in requirements file:
diff --git a/test_pyproject_buildrequires.py b/test_pyproject_buildrequires.py
index f9b2650..74f3ae8 100644
--- a/test_pyproject_buildrequires.py
+++ b/test_pyproject_buildrequires.py
@@ -71,7 +71,12 @@ def test_data(case_name, capfd, tmp_path, monkeypatch):
         out, err = capfd.readouterr()
 
         if 'expected' in case:
-            assert out == case['expected']
+            expected = case['expected']
+            if isinstance(expected, list):
+                # at least one of them needs to match
+                assert any(out == e for e in expected)
+            else:
+                assert out == expected
 
         # stderr_contains may be a string or list of strings
         stderr_contains = case.get('stderr_contains')