diff --git a/Makefile b/Makefile
index 71fb1bb8..ec8c70d2 100644
--- a/Makefile
+++ b/Makefile
@@ -234,7 +234,7 @@ dist_dependent_files := \
     README.md \
     AUTHORS.md \
     requirements.txt \
-    extra-testutils-requirements.txt \
+    requirements-testutils.txt \
     $(package_py_files) \
 
 # No built-in rules needed:
@@ -459,7 +459,7 @@ bandit: $(done_dir)/bandit_$(pymn)_$(PACKAGE_LEVEL).done
 install: $(done_dir)/install_$(pymn)_$(PACKAGE_LEVEL).done
 	@echo "Makefile: $@ done."
 
-$(done_dir)/install_$(pymn)_$(PACKAGE_LEVEL).done: Makefile $(done_dir)/base_$(pymn)_$(PACKAGE_LEVEL).done requirements.txt extra-testutils-requirements.txt minimum-constraints-develop.txt minimum-constraints-install.txt $(dist_dependent_files)
+$(done_dir)/install_$(pymn)_$(PACKAGE_LEVEL).done: Makefile $(done_dir)/base_$(pymn)_$(PACKAGE_LEVEL).done requirements.txt requirements-testutils.txt minimum-constraints-develop.txt minimum-constraints-install.txt $(dist_dependent_files)
 	rm -f $@
 	@echo "Installing $(package_name) (non-editable) and runtime reqs with PACKAGE_LEVEL=$(PACKAGE_LEVEL)"
 	$(PYTHON_CMD) -m pip install $(pip_level_opts) $(pip_level_opts_new) .
@@ -649,13 +649,13 @@ check_reqs_install: Makefile $(done_dir)/install_$(pymn)_$(PACKAGE_LEVEL).done m
 	@echo "Makefile: $@ done."
 
 .PHONY: check_reqs
-check_reqs: Makefile $(done_dir)/develop_$(pymn)_$(PACKAGE_LEVEL).done minimum-constraints-install.txt minimum-constraints-develop.txt requirements.txt extra-testutils-requirements.txt
+check_reqs: Makefile $(done_dir)/develop_$(pymn)_$(PACKAGE_LEVEL).done minimum-constraints-install.txt minimum-constraints-develop.txt requirements.txt requirements-testutils.txt
 	@echo "Makefile: Checking missing and extra dependencies of this package"
 ifeq ($(PLATFORM),Windows_native)
 # Reason for skipping on Windows is https://github.com/r1chardj0n3s/pip-check-reqs/issues/67
 	@echo "Makefile: Warning: Skipping the use of pip-missing-reqs on native Windows" >&2
 else
-	cat requirements.txt extra-testutils-requirements.txt >tmp_requirements.txt
+	cat requirements.txt requirements-testutils.txt >tmp_requirements.txt
 	pip-missing-reqs $(package_name) --ignore-module $(package_name) --ignore-module $(mock_package_name) --requirements-file=tmp_requirements.txt
 	pip-missing-reqs $(package_name) --ignore-module $(package_name) --ignore-module $(mock_package_name) --requirements-file=minimum-constraints-install.txt
 	rm -f tmp_requirements.txt
diff --git a/minimum-constraints-install.txt b/minimum-constraints-install.txt
index 1ee9ae9b..9da384b9 100644
--- a/minimum-constraints-install.txt
+++ b/minimum-constraints-install.txt
@@ -41,7 +41,7 @@ urllib3==2.6.3; python_version == '3.9'
 urllib3==2.7.0; python_version >= '3.10'
 
 
-# Direct dependencies for install of extra 'testutils' (must be consistent with extra-testutils-requirements)
+# Direct dependencies for install of extra 'testutils' (must be consistent with requirements-testutils.txt)
 
 # Used by zhmcclient.testutils
 pytest==8.4.0; python_version == '3.9'
diff --git a/pyproject.toml b/pyproject.toml
index 32b01501..d083ecd7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ Changelog = "https://python-zhmcclient.readthedocs.io/en/master/changes.html"
 dependencies = {file = ["requirements.txt"]}
 
 [tool.setuptools.dynamic.optional-dependencies]
-testutils = {file = ['extra-testutils-requirements.txt']}
+testutils = {file = ['requirements-testutils.txt']}
 
 [tool.setuptools_scm]
 # Get the version from the Git tag, and write a version file:
diff --git a/requirements-develop.txt b/requirements-develop.txt
index ab4ffe04..bdeeb698 100644
--- a/requirements-develop.txt
+++ b/requirements-develop.txt
@@ -14,7 +14,7 @@ pyproject-hooks>=1.1.0
 towncrier>=22.8.0
 
 # Unit test (imports into testcases):
-# pytest is covered in extra-testutils-requirements.txt
+# pytest is covered in requirements-testutils.txt
 testfixtures>=6.9.0
 # For versions of importlib-metadata that are in Python, see https://pypi.org/project/importlib-metadata/
 importlib-metadata>=8.7.0
diff --git a/extra-testutils-requirements.txt b/requirements-testutils.txt
similarity index 100%
rename from extra-testutils-requirements.txt
rename to requirements-testutils.txt