diff --git a/requirements-build.txt b/requirements-build.txt
index f2423c1..a4b9706 100644
--- a/requirements-build.txt
+++ b/requirements-build.txt
@@ -4,4 +4,4 @@ virtualenv~=20.26
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability
 logilab-common~=2.0
 m2r~=0.3
-tox~=4.17
+tox~=4.18