diff --git a/{{cookiecutter.project_slug}}/pyproject.toml b/{{cookiecutter.project_slug}}/pyproject.toml
index 85db59212f7fd565d9061f0e02be9edc78f99190..c72b34b1ac8ecbf27980c920c493ec600cb60ab1 100644
--- a/{{cookiecutter.project_slug}}/pyproject.toml
+++ b/{{cookiecutter.project_slug}}/pyproject.toml
@@ -125,6 +125,6 @@ commands = [["python", "-m", "build"]]
 [tool.tox.env.build-ci-linux]
 package = "wheel"
 deps = ["-r{toxinidir}/build-requirements.txt"]
-allowlist_externals = ["docker"]
+allowlist_externals = ["docker", "which"]
 pass_env = ["DOCKER_HOST", "DOCKER_TLS_VERIFY", "DOCKER_CERT_PATH"]
 commands = [["python", "-m", "cibuildwheel", "--platform", "linux", "--output-dir", "dist"]]