diff --git a/packages/google-cloud-texttospeech/noxfile.py b/packages/google-cloud-texttospeech/noxfile.py
index 8e9b9413d302..0eb433e228ec 100644
--- a/packages/google-cloud-texttospeech/noxfile.py
+++ b/packages/google-cloud-texttospeech/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/packages/google-cloud-texttospeech/synth.metadata b/packages/google-cloud-texttospeech/synth.metadata
index f8881fa0b4fa..b2987f0ca5f8 100644
--- a/packages/google-cloud-texttospeech/synth.metadata
+++ b/packages/google-cloud-texttospeech/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/python-texttospeech.git",
-        "sha": "3d6431c1b978262ecd353746d45c62cfcab0c431"
+        "sha": "6a8f8e566a95e8496727ada14a3356df08b1a229"
       }
     },
     {
@@ -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"
       }
     }
   ],
@@ -163,7 +163,6 @@
     "tests/unit/gapic/texttospeech_v1/__init__.py",
     "tests/unit/gapic/texttospeech_v1/test_text_to_speech.py",
     "tests/unit/gapic/texttospeech_v1beta1/__init__.py",
-    "tests/unit/gapic/texttospeech_v1beta1/test_text_to_speech.py",
-    "texttospeech-v1beta1-py.tar.gz"
+    "tests/unit/gapic/texttospeech_v1beta1/test_text_to_speech.py"
   ]
 }
\ No newline at end of file
diff --git a/packages/google-cloud-texttospeech/texttospeech-v1beta1-py.tar.gz b/packages/google-cloud-texttospeech/texttospeech-v1beta1-py.tar.gz
deleted file mode 100644
index e69de29bb2d1..000000000000