We do not have this optional test dependency packaged yet.

--- coincidence-0.6.6/tox.ini.orig
+++ coincidence-0.6.6/tox.ini
@@ -210,7 +210,6 @@
 unused-arguments-ignore-variadic-names = True
 
 [coverage:run]
-plugins = coverage_pyver_pragma
 
 [coverage:report]
 fail_under = 100
--- coincidence-0.6.6/tests/requirements.txt.orig
+++ coincidence-0.6.6/tests/requirements.txt
@@ -1,6 +1,5 @@
 backports-entry-points-selectable>=1.0.2
 coverage>=5.1
-coverage-pyver-pragma>=0.2.1
 domdf-python-tools[testing]>=2.0.1
 importlib-metadata>=3.6.0
 iniconfig!=1.1.0,>=1.0.1