diff --git a/tox.ini b/tox.ini
index a086a02..f4c2c2e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ commands = pytest {posargs}
 
 [testenv:py37]
 # nb. newer coverage is causing segfault for this one, so must avoid that
-deps = coverage<7.2.4
+deps = coverage<6.5
 
 [testenv:coverage]
 basepython = python3.11