diff --git a/.kokoro/release/docs-devsite.sh b/.kokoro/release/docs-devsite.sh
index 0d11b7ae..7657be33 100755
--- a/.kokoro/release/docs-devsite.sh
+++ b/.kokoro/release/docs-devsite.sh
@@ -37,9 +37,13 @@ NAME=$(cat .repo-metadata.json | json name)
 mkdir ./_devsite
 cp ./yaml/$NAME/* ./_devsite
 
+# Clean up TOC
 # Delete SharePoint item, see https://github.com/microsoft/rushstack/issues/1229
 sed -i -e '1,3d' ./yaml/toc.yml
 sed -i -e 's/^    //' ./yaml/toc.yml
+# Delete interfaces from TOC (name and uid)
+sed -i -e '/name: I[A-Z]/{N;d;}' ./yaml/toc.yml
+sed -i -e '/^ *\@google-cloud.*:interface/d' ./yaml/toc.yml
 
 cp ./yaml/toc.yml ./_devsite/toc.yml
 
diff --git a/synth.metadata b/synth.metadata
index 2c01637d..a66955ff 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-dialogflow.git",
-        "sha": "05c386fe5a8c1f21f3d513a673affe79afad8cce"
+        "sha": "1a72b5cc181e433feb9acd4d4925a0106f15d689"
       }
     },
     {
@@ -19,7 +19,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "5451633881133e5573cc271a18e73b18caca8b1b"
+        "sha": "901ddd44e9ef7887ee681b9183bbdea99437fdcc"
       }
     }
   ],