diff -rup channelstream-0.6.14-orig/setup.py channelstream-0.6.14/setup.py

--- channelstream-0.6.14/setup-orig.py	2021-03-11 12:34:45.000000000 +0100
+++ channelstream-0.6.14/setup.py	2021-03-11 12:34:56.000000000 +0100
@@ -52,7 +52,7 @@ setup(
     include_package_data=True,
     install_requires=requires,
     python_requires=">=2.7",
-    setup_requires=["pytest-runner"],
+    setup_requires=["pytest-runner==5.1.0"],
     extras_require={
         "dev": ["coverage", "pytest", "pyramid", "tox", "mock", "webtest"],
         "lint": ["black"],