diff --git a/pyproject.toml b/pyproject.toml
index b246f17c..107c076c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ description = "A wrapper for the SLICOT control and systems library"
 readme = "README.rst"
 authors = [{ name = "Enrico Avventi et al." }]
 maintainers = [{ name = "Slycot developers", email = "python-control-discuss@lists.sourceforge.net"}]
-license = "GPL-2.0 AND BSD-3-Clause AND GPL-3.0-with-GCC-exception AND BSD-2-Clause"
+license = "GPL-2.0 AND BSD-3-Clause"
 # the * is important: it allows adding SLICOT and OpenBLAS licenses when building wheels
 license-files = ["AUTHORS", "LICENSE*.txt"]