diff --git a/pyproject.toml.jinja b/pyproject.toml.jinja
index 960fd4f..62c0c83 100644
--- a/pyproject.toml.jinja
+++ b/pyproject.toml.jinja
@@ -17,6 +17,7 @@ dependencies = []
 [project.optional-dependencies]
 dev = [
     "black",
+    "copier",
     "isort",
     "coverage",
     "pylint",