diff --git a/.github/readme/synth.metadata/synth.metadata b/.github/readme/synth.metadata/synth.metadata
index 91714587..1fa244fb 100644
--- a/.github/readme/synth.metadata/synth.metadata
+++ b/.github/readme/synth.metadata/synth.metadata
@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-storage-nio.git",
-        "sha": "f9b5ed3025d72731397a8ee162c00ede9a23d2fc"
+        "sha": "3a3d46599b463801714cc415c0e49e112f8d8838"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "b259489b06b25f399768b74b8baa943991f38ea7"
+        "sha": "4679e7e415221f03ff2a71e3ffad75b9ec41d87e"
       }
     }
   ]
diff --git a/README.md b/README.md
index 6672f89f..506622e6 100644
--- a/README.md
+++ b/README.md
@@ -49,7 +49,7 @@ If you are using Maven without BOM, add this to your dependencies:
 
 If you are using Gradle 5.x or later, add this to your dependencies
 ```Groovy
-implementation platform('com.google.cloud:libraries-bom:16.3.0')
+implementation platform('com.google.cloud:libraries-bom:16.4.0')
 
 compile 'com.google.cloud:google-cloud-nio'
 ```