diff --git a/pyproject.toml b/pyproject.toml
index b859758d..713e933a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=42", "wheel", "setuptools_scm[toml]>=3.4", "numpy"]
+requires = ["setuptools>=42,<60", "wheel", "setuptools_scm[toml]>=3.4", "numpy"]
 build-backend = "setuptools.build_meta"
 
 [tool.setuptools_scm]
diff --git a/src/fsps/libfsps b/src/fsps/libfsps
index e38bf42f..80619446 160000
--- a/src/fsps/libfsps
+++ b/src/fsps/libfsps
@@ -1 +1 @@
-Subproject commit e38bf42f74b49a11a0d5caa9dbfa7ce1432dbfd3
+Subproject commit 806194467b64d0d04029b865a7c64b89e225a6e7