diff --git a/pyproject.toml b/pyproject.toml
index ac9e4be..6559e55 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -56,7 +56,7 @@ package-dir = { '' = '.' } # without this line, C++ source files get included in
 
 [tool.cibuildwheel]
 build = "cp{37,38,39,310}-*"
-test-command = "python -m unittest --verbose
+test-command = "python -m unittest --verbose"
 test-extras = ["tests"]
 manylinux-x86_64-image = "manylinux2014"
 manylinux-aarch64-image = "manylinux2014"