diff --git a/.github/readme/synth.metadata/synth.metadata b/.github/readme/synth.metadata/synth.metadata
index 29ca08c6..e41e6990 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-texttospeech.git",
-        "sha": "e97ad7d1ce1bb2749a200492967523c5228c0c4a"
+        "sha": "400ab406955d31994118d0ec31ab30477d2ae034"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "0a071b3460344886297a304253bf924aa68ddb7e"
+        "sha": "082e1ca0863b13ada8594fe91845380765da5b70"
       }
     }
   ]
diff --git a/README.md b/README.md
index 0c3cb53e..fee3a709 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ If you are using Maven without BOM, add this to your dependencies:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-texttospeech</artifactId>
-  <version>1.3.0</version>
+  <version>1.4.0</version>
 </dependency>
 
 ```
@@ -52,12 +52,12 @@ compile 'com.google.cloud:google-cloud-texttospeech'
 ```
 If you are using Gradle without BOM, add this to your dependencies
 ```Groovy
-compile 'com.google.cloud:google-cloud-texttospeech:1.3.0'
+compile 'com.google.cloud:google-cloud-texttospeech:1.4.0'
 ```
 
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-texttospeech" % "1.3.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-texttospeech" % "1.4.0"
 ```
 
 ## Authentication