diff --git a/pyproject.toml b/pyproject.toml
index bceb176e..a76e9514 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,15 +38,14 @@ test = [
   "pytest",
   "pytest-cov",
   "scikit-build-core",
-  "nbval"
-  "scikit-build-core"
+  "nbval",
 ]
 dev = [
   "pytest",
   "pytest-cov",
   "scikit-build-core",
   "pre-commit",
-  "nbval"
+  "nbval",
 ]
 docs = [
   "Sphinx",