diff --git a/btest.cfg b/btest.cfg
new file mode 100644
index 0000000..7d0611e
--- /dev/null
+++ b/btest.cfg
@@ -0,0 +1,9 @@
+[btest]
+TestDirs    = pysubnettree
+TmpDir      = %(testbase)s/.tmp
+BaselineDir = %(testbase)s/Baseline
+IgnoreDirs  = .svn CVS .tmp
+IgnoreFiles = *.tmp *.swp #* *.trace .DS_Store
+
+[environment]
+TMPDIR=%(testbase)s/.tmp
diff --git a/conftest.py b/conftest.py
deleted file mode 100644
index 78cc5ff..0000000
--- a/conftest.py
+++ /dev/null
@@ -1,36 +0,0 @@
-import subprocess
-import sys
-import pytest
-
-
-def pytest_collect_file(parent, file_path):
-    if file_path.suffix == ".test":
-        return BtestFile.from_parent(parent, path=file_path)
-
-
-class BtestFile(pytest.File):
-    def collect(self):
-        yield BtestItem.from_parent(self, name=self.path.stem)
-
-
-class BtestItem(pytest.Item):
-    def runtest(self):
-        result = subprocess.run(
-            [sys.executable, str(self.parent.path)],
-            capture_output=True,
-            text=True,
-        )
-        if result.returncode != 0:
-            raise BtestFailure(result)
-
-    def repr_failure(self, excinfo):
-        exc = excinfo.value
-        return (exc.result.stdout + exc.result.stderr).strip()
-
-    def reportinfo(self):
-        return self.parent.path, None, f"btest: {self.name}"
-
-
-class BtestFailure(Exception):
-    def __init__(self, result):
-        self.result = result
diff --git a/python-pysubnettree.spec b/python-pysubnettree.spec
index f752ee7..2e6c752 100644
--- a/python-pysubnettree.spec
+++ b/python-pysubnettree.spec
@@ -7,15 +7,15 @@ Summary:        Python Module for CIDR Lookups
 License:        BSD-3-Clause-LBNL and BSD-4-Clause
 URL:            https://github.com/zeek/pysubnettree
 Source0:        %{url}/archive/v%{version}/%{name}-%{version}.tar.gz
-# pytest plugin to collect and run *.test files without btest
-Source1:        conftest.py
+# btest config file for RPM build environment
+Source1:        btest.cfg
 
 Provides:       pysubnettree = %{version}-%{release}
 Obsoletes:      pysubnettree < 0.35-16
 
 BuildRequires:  python3-devel
 BuildRequires:  gcc-c++
-BuildRequires:  python3-pytest
+BuildRequires:  zeek-btest
 
 
 %global _description %{expand:
@@ -52,9 +52,9 @@ Summary:        %{summary}
 
 %check
 %pyproject_check_import
-cp %{SOURCE1} testing/conftest.py
 cd testing
-PYTHONPATH="%{buildroot}%{python3_sitearch}:$PWD/Scripts" pytest pysubnettree/
+cp %{SOURCE1} btest.cfg
+PYTHONPATH="%{buildroot}%{python3_sitearch}:$PWD/Scripts" btest -c btest.cfg -d
 
 
 %files -n python3-pysubnettree -f %{pyproject_files}