We do not have this optional test dependency packaged yet.

--- pytest-benchmark-5.1.0/tox.ini.orig
+++ pytest-benchmark-5.1.0/tox.ini
@@ -59,7 +59,6 @@
     hunter
     setuptools
     elasticsearch==8.15.1
-    nbmake==1.5.4
 commands =
     {posargs:pytest -vv --ignore=src}
     cover: {posargs:pytest --cov --cov-report=term-missing --cov-report=xml -vv}
--- pytest-benchmark-5.1.0/pytest.ini.orig
+++ pytest-benchmark-5.1.0/pytest.ini
@@ -25,7 +25,6 @@
     --ignore=src/pytest_benchmark/pep418.py
     --doctest-modules
     --doctest-glob=\*.rst
-    --nbmake
     --tb=short
 testpaths =
     tests