diff --git a/erfa/_dev/scm_version.py b/erfa/_dev/scm_version.py
index 11a728f..3e1e8bd 100644
--- a/erfa/_dev/scm_version.py
+++ b/erfa/_dev/scm_version.py
@@ -7,7 +7,7 @@
 from warnings import warn
 
 try:
-    from setuptools_scm import git, get_version as _get_version
+    from setuptools_scm import git, Configuration, get_version as _get_version
     from setuptools_scm.version import guess_next_version
 
     def _guess_next_dev(version, liberfadir=None):
@@ -15,7 +15,8 @@ def _guess_next_dev(version, liberfadir=None):
             liberfadir = pathlib.Path(
                 __file__).parent.parent.parent / 'liberfa' / 'erfa'
 
-        erfa_version = git.parse(liberfadir)
+        config = Configuration(root=liberfadir)
+        erfa_version = git.parse(liberfadir, config=config)
         if not erfa_version.exact:
             warn(f'liberfa/erfa not at a tagged release, but at {erfa_version}')
 
diff --git a/pyproject.toml b/pyproject.toml
index 94c37da..c73665a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [build-system]
 requires = [
     "setuptools",
-    "setuptools_scm>=6.2,<8",
+    "setuptools_scm>=6.2",
     "jinja2>=2.10.3",
     "numpy>=1.25,<2"
 ]