diff --git a/pyproject.toml b/pyproject.toml
index 2e8e61e437..dc348177bd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -74,6 +74,7 @@ install_components = ["python_modules", "python_stubs"]
 "ALPAQA_WITH_TESTS:BOOL" = "Off"
 "ALPAQA_WITH_EXAMPLES:BOOL" = "Off"
 "ALPAQA_WITH_DRIVERS:BOOL" = "Off"
+"ALPAQA_WITH_LBFGSB:BOOL" = "Off"
 "ALPAQA_WITH_SINGLE_PRECISION:BOOL" = "Off"
 "ALPAQA_WITH_LONG_DOUBLE:BOOL" = "On"
 "ALPAQA_WITH_QUAD_PRECISION:BOOL" = "Off"