diff --git a/noxfile.py b/noxfile.py
index ae8392b..af50a60 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -211,9 +211,7 @@ def docfx(session):
     """Build the docfx yaml files for this library."""
 
     session.install("-e", ".")
-    # sphinx-docfx-yaml supports up to sphinx version 1.5.5.
-    # https://github.com/docascode/sphinx-docfx-yaml/issues/97
-    session.install("sphinx==1.5.5", "alabaster", "recommonmark", "sphinx-docfx-yaml")
+    session.install("sphinx", "alabaster", "recommonmark", "gcp-sphinx-docfx-yaml")
 
     shutil.rmtree(os.path.join("docs", "_build"), ignore_errors=True)
     session.run(
diff --git a/synth.metadata b/synth.metadata
index 2e0cfc2..2a89f13 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/python-video-transcoder.git",
-        "sha": "4076914adfde514417b5a39a0e5fcd905e5f6e8f"
+        "sha": "e593578dab2d641de7df178ffd118ada158ab602"
       }
     },
     {
@@ -19,14 +19,14 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "86ed43d4f56e6404d068e62e497029018879c771"
+        "sha": "4501974ad08b5d693311457e2ea4ce845676e329"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "86ed43d4f56e6404d068e62e497029018879c771"
+        "sha": "4501974ad08b5d693311457e2ea4ce845676e329"
       }
     }
   ],