diff --git a/pyproject.toml b/pyproject.toml
index 8ab0b857..3c2ad821 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 name = "GPy"
 version = "1.13.1"
 description = "The Gaussian Process Toolbox"
-authors = ["GPy Authors <gpy.authors@gmail.com"]
+authors = ["GPy Authors <gpy.authors@gmail.com>"]
 license = "BSD-3-Clause"
 keywords = ["machine-learning", "gaussian-processes", "kernels"]
 homepage = "https://sheffieldml.github.io/GPy/"