diff --git a/CHANGELOG.md b/CHANGELOG.md
index e9d70ff56..f2f0776db 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 # Changelog
 
+## [1.31.0](https://www.github.com/googleapis/google-api-java-client/compare/v1.30.11...v1.31.0) (2020-11-10)
+
+
+### Features
+
+* add GoogleApacheHttpTransport that uses the v2 ApacheHttpTransport implementation ([#1568](https://www.github.com/googleapis/google-api-java-client/issues/1568)) ([d0dbca7](https://www.github.com/googleapis/google-api-java-client/commit/d0dbca720479f1ca8627c58eda195857ea0b2423))
+* add mtls support to GoogleNetHttpTransport and GoogleApacheHttpTransport ([#1619](https://www.github.com/googleapis/google-api-java-client/issues/1619)) ([1d8304c](https://www.github.com/googleapis/google-api-java-client/commit/1d8304c6311e910293b800ffdbf0bb6f19cf7fff))
+
+
+### Dependencies
+
+* update dependency com.google.appengine:appengine-api-1.0-sdk to v1.9.83 ([#1622](https://www.github.com/googleapis/google-api-java-client/issues/1622)) ([10bb904](https://www.github.com/googleapis/google-api-java-client/commit/10bb90441c90cb5ea7045a1ac5d39d669fad963d))
+* update dependency com.google.oauth-client:google-oauth-client-bom to v1.31.2 ([#1623](https://www.github.com/googleapis/google-api-java-client/issues/1623)) ([5942561](https://www.github.com/googleapis/google-api-java-client/commit/594256120e4eb37b0f3ca386f69542b68b53d05b))
+* update google-http-client to v1.38.0 ([#1620](https://www.github.com/googleapis/google-api-java-client/issues/1620)) ([bb63ded](https://www.github.com/googleapis/google-api-java-client/commit/bb63ded8846cd515c993c288728063f35e226ec5))
+
 ### [1.30.11](https://www.github.com/googleapis/google-api-java-client/compare/v1.30.10...v1.30.11) (2020-10-13)
 
 
diff --git a/README.md b/README.md
index a88f8b764..c648e2eb9 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ To use Maven, add the following lines to your pom.xml file:
       <dependency>
         <groupId>com.google.api-client</groupId>
         <artifactId>google-api-client</artifactId>
-        <version>1.30.11</version>
+        <version>1.31.0</version>
       </dependency>
     </dependencies>
   </project>
@@ -48,7 +48,7 @@ repositories {
     google()
 }
 dependencies {
-    compile 'com.google.api-client:google-api-client:1.30.11'
+    compile 'com.google.api-client:google-api-client:1.31.0'
 }
 ```
 [//]: # ({x-version-update-end})
diff --git a/google-api-client-android/pom.xml b/google-api-client-android/pom.xml
index 7164053fc..9adb76a4f 100644
--- a/google-api-client-android/pom.xml
+++ b/google-api-client-android/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.api-client</groupId>
     <artifactId>google-api-client-parent</artifactId>
-    <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+    <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>google-api-client-android</artifactId>
diff --git a/google-api-client-appengine/pom.xml b/google-api-client-appengine/pom.xml
index 8b1cdf5cc..305f5894d 100644
--- a/google-api-client-appengine/pom.xml
+++ b/google-api-client-appengine/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.api-client</groupId>
     <artifactId>google-api-client-parent</artifactId>
-    <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+    <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>google-api-client-appengine</artifactId>
diff --git a/google-api-client-assembly/pom.xml b/google-api-client-assembly/pom.xml
index a0b49697b..59b4383e3 100644
--- a/google-api-client-assembly/pom.xml
+++ b/google-api-client-assembly/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.api-client</groupId>
     <artifactId>google-api-client-parent</artifactId>
-    <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+    <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
   <groupId>com.google.api-client</groupId>
diff --git a/google-api-client-bom/pom.xml b/google-api-client-bom/pom.xml
index 2d911b1be..400b1cb2d 100644
--- a/google-api-client-bom/pom.xml
+++ b/google-api-client-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api-client</groupId>
   <artifactId>google-api-client-bom</artifactId>
-  <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+  <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
   <packaging>pom</packaging>
 
   <name>Google API Client Library for Java BOM</name>
@@ -63,52 +63,52 @@
       <dependency>
         <groupId>com.google.api-client</groupId>
         <artifactId>google-api-client</artifactId>
-        <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+        <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api-client</groupId>
         <artifactId>google-api-client-android</artifactId>
-        <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+        <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api-client</groupId>
         <artifactId>google-api-client-appengine</artifactId>
-        <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+        <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api-client</groupId>
         <artifactId>google-api-client-assembly</artifactId>
-        <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+        <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api-client</groupId>
         <artifactId>google-api-client-gson</artifactId>
-        <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+        <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api-client</groupId>
         <artifactId>google-api-client-jackson2</artifactId>
-        <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+        <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api-client</groupId>
         <artifactId>google-api-client-java6</artifactId>
-        <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+        <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api-client</groupId>
         <artifactId>google-api-client-protobuf</artifactId>
-        <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+        <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api-client</groupId>
         <artifactId>google-api-client-servlet</artifactId>
-        <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+        <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api-client</groupId>
         <artifactId>google-api-client-xml</artifactId>
-        <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+        <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-api-client-gson/pom.xml b/google-api-client-gson/pom.xml
index 25207e432..83acf1562 100644
--- a/google-api-client-gson/pom.xml
+++ b/google-api-client-gson/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.api-client</groupId>
     <artifactId>google-api-client-parent</artifactId>
-    <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+    <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>google-api-client-gson</artifactId>
diff --git a/google-api-client-jackson2/pom.xml b/google-api-client-jackson2/pom.xml
index 8f4f3ea17..97cacb1e6 100644
--- a/google-api-client-jackson2/pom.xml
+++ b/google-api-client-jackson2/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.api-client</groupId>
     <artifactId>google-api-client-parent</artifactId>
-    <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+    <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>google-api-client-jackson2</artifactId>
diff --git a/google-api-client-java6/pom.xml b/google-api-client-java6/pom.xml
index e648e4640..154dba282 100644
--- a/google-api-client-java6/pom.xml
+++ b/google-api-client-java6/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.api-client</groupId>
     <artifactId>google-api-client-parent</artifactId>
-    <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+    <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>google-api-client-java6</artifactId>
diff --git a/google-api-client-protobuf/pom.xml b/google-api-client-protobuf/pom.xml
index 3d623644c..943f80b8f 100644
--- a/google-api-client-protobuf/pom.xml
+++ b/google-api-client-protobuf/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.api-client</groupId>
     <artifactId>google-api-client-parent</artifactId>
-    <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+    <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>google-api-client-protobuf</artifactId>
diff --git a/google-api-client-servlet/pom.xml b/google-api-client-servlet/pom.xml
index faef8a36d..9e3f06386 100644
--- a/google-api-client-servlet/pom.xml
+++ b/google-api-client-servlet/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.api-client</groupId>
     <artifactId>google-api-client-parent</artifactId>
-    <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+    <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>google-api-client-servlet</artifactId>
diff --git a/google-api-client-xml/pom.xml b/google-api-client-xml/pom.xml
index a25182efd..81250443c 100644
--- a/google-api-client-xml/pom.xml
+++ b/google-api-client-xml/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.api-client</groupId>
     <artifactId>google-api-client-parent</artifactId>
-    <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+    <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>google-api-client-xml</artifactId>
diff --git a/google-api-client/pom.xml b/google-api-client/pom.xml
index 0f3255184..65ee561ff 100644
--- a/google-api-client/pom.xml
+++ b/google-api-client/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.api-client</groupId>
     <artifactId>google-api-client-parent</artifactId>
-    <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+    <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
     <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>google-api-client</artifactId>
diff --git a/pom.xml b/pom.xml
index a517727ee..638a48771 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
   </parent>
   <groupId>com.google.api-client</groupId>
   <artifactId>google-api-client-parent</artifactId>
-  <version>1.30.12-SNAPSHOT</version><!-- {x-version-update:google-api-client:current} -->
+  <version>1.31.0</version><!-- {x-version-update:google-api-client:current} -->
   <packaging>pom</packaging>
   <name>Parent for the Google API Client Library for Java</name>
 
diff --git a/versions.txt b/versions.txt
index 5ca2b4542..97bbbea8f 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-google-api-client:1.30.11:1.30.12-SNAPSHOT
+google-api-client:1.31.0:1.31.0