diff --git a/docs/source/conf.py b/docs/source/conf.py
index 9c47f15..a8ae57f 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -109,8 +109,8 @@ def find_source():
         filename = 'torchcp/%s#L%d-L%d' % find_source()
     except Exception:
         filename = info['module'].replace('.', '/') + '.py'
-    tag = 'development'
-    url = "https://github.com/ml-stat-Sustech/TorchCP/%s/%s"
+    tag = 'master'
+    url = "https://github.com/ml-stat-Sustech/TorchCP/blob/%s/%s"
     return url % (tag, filename)
 
 # -- Options for HTML output -------------------------------------------------