diff --git a/docs/conf.py b/docs/conf.py
index 2ebdc1d82..22838f8c0 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -346,10 +346,7 @@
 # Example configuration for intersphinx: refer to the Python standard library.
 intersphinx_mapping = {
     "python": ("https://python.readthedocs.org/en/latest/", None),
-    "google-auth": (
-        "https://googleapis.dev/python/google-auth/latest/index.html",
-        None,
-    ),
+    "google-auth": ("https://googleapis.dev/python/google-auth/latest/", None),
     "google.api_core": ("https://googleapis.dev/python/google-api-core/latest/", None,),
     "grpc": ("https://grpc.github.io/grpc/python/", None),
     "proto-plus": ("https://proto-plus-python.readthedocs.io/en/latest/", None),
diff --git a/synth.metadata b/synth.metadata
index 54c1d2231..4816f83ae 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -19,7 +19,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "9a7d9fbb7045c34c9d3d22c1ff766eeae51f04c9"
+        "sha": "a073c873f3928c561bdf87fdfbf1d081d1998984"
       }
     }
   ],