diff --git a/modules.ini b/modules.ini
index 20aada2..7de1f13 100644
--- a/modules.ini
+++ b/modules.ini
@@ -114,6 +114,14 @@ contents = verilog
 license = License :: OSI Approved :: Mozilla Public License 2.0 (MPL 2.0)
 license_spdx = MPL-2.0
 
+[openc906]
+type = cpu
+human_name = OpenC906
+src = https://github.com/XUANTIE-RV/openc906
+contents = verilog
+license = License :: OSI Approved :: Apache Software License
+license_spdx = Apache-2.0
+
 [opentitan]
 type = misc
 human_name = OpenTitan
diff --git a/update.py b/update.py
index 1c5cb74..29246f0 100755
--- a/update.py
+++ b/update.py
@@ -381,6 +381,7 @@ def update(module_data):
         u("Updating", repo_root, root)
         if not os.path.exists(repo_root):
             os.makedirs(repo_root)
+            subprocess_check_call(['git', 'init', '-b', 'master'], cwd=repo_root)
 
         for d in dirs:
             path_d = os.path.join(path, d)