diff --git a/CHANGELOG.md b/CHANGELOG.md
index e87c65ac8d9..4d1c59ecaeb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 # Changelog
 
+## [6.31.0](https://github.com/googleapis/java-spanner/compare/v6.30.2...v6.31.0) (2022-09-29)
+
+
+### Features
+
+* Support customer managed instance configurations ([#1742](https://github.com/googleapis/java-spanner/issues/1742)) ([c1c805c](https://github.com/googleapis/java-spanner/commit/c1c805cf6e9c00f2d6796627d919338be1a0599a))
+
+
+### Dependencies
+
+* Update dependency com.google.cloud:google-cloud-trace to v2.3.4 ([#2027](https://github.com/googleapis/java-spanner/issues/2027)) ([14890ed](https://github.com/googleapis/java-spanner/commit/14890ed8e0df99eba7c2521a196132c78054b6ed))
+* Update dependency com.google.cloud:google-cloud-trace to v2.3.5 ([#2083](https://github.com/googleapis/java-spanner/issues/2083)) ([cef4e0a](https://github.com/googleapis/java-spanner/commit/cef4e0ada98ab65020f32836fc0c8ab1ee0c7eed))
+* Update dependency org.graalvm.buildtools:junit-platform-native to v0.9.14 ([#2030](https://github.com/googleapis/java-spanner/issues/2030)) ([04b59ff](https://github.com/googleapis/java-spanner/commit/04b59ff8a1efaa32082aa4e9567d90b5956810c6))
+* Update dependency org.json:json to v20220924 ([#2035](https://github.com/googleapis/java-spanner/issues/2035)) ([a26a14a](https://github.com/googleapis/java-spanner/commit/a26a14a94ac3ca6cd7eabce6826cce3dde27ea66))
+
 ## [6.30.2](https://github.com/googleapis/java-spanner/compare/v6.30.1...v6.30.2) (2022-09-21)
 
 
diff --git a/google-cloud-spanner-bom/pom.xml b/google-cloud-spanner-bom/pom.xml
index 1b3fc9c8222..e34c8a09e57 100644
--- a/google-cloud-spanner-bom/pom.xml
+++ b/google-cloud-spanner-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-spanner-bom</artifactId>
-  <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+  <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -53,43 +53,43 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+        <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner</artifactId>
         <type>test-jar</type>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+        <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-admin-instance-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-admin-database-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-admin-instance-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-admin-database-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-spanner/pom.xml b/google-cloud-spanner/pom.xml
index 5dbb48a28a6..f29a641be3e 100644
--- a/google-cloud-spanner/pom.xml
+++ b/google-cloud-spanner/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-spanner</artifactId>
-  <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+  <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Spanner</name>
   <url>https://github.com/googleapis/java-spanner</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-spanner</site.installationModule>
diff --git a/grpc-google-cloud-spanner-admin-database-v1/pom.xml b/grpc-google-cloud-spanner-admin-database-v1/pom.xml
index 9823e1fc983..f23b04ae73c 100644
--- a/grpc-google-cloud-spanner-admin-database-v1/pom.xml
+++ b/grpc-google-cloud-spanner-admin-database-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-spanner-admin-database-v1</artifactId>
-  <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
+  <version>6.31.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
   <name>grpc-google-cloud-spanner-admin-database-v1</name>
   <description>GRPC library for grpc-google-cloud-spanner-admin-database-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/grpc-google-cloud-spanner-admin-instance-v1/pom.xml b/grpc-google-cloud-spanner-admin-instance-v1/pom.xml
index 12fce029253..358fa2ac4a7 100644
--- a/grpc-google-cloud-spanner-admin-instance-v1/pom.xml
+++ b/grpc-google-cloud-spanner-admin-instance-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-spanner-admin-instance-v1</artifactId>
-  <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
+  <version>6.31.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
   <name>grpc-google-cloud-spanner-admin-instance-v1</name>
   <description>GRPC library for grpc-google-cloud-spanner-admin-instance-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/grpc-google-cloud-spanner-v1/pom.xml b/grpc-google-cloud-spanner-v1/pom.xml
index be063d75b26..16c0338a583 100644
--- a/grpc-google-cloud-spanner-v1/pom.xml
+++ b/grpc-google-cloud-spanner-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-spanner-v1</artifactId>
-  <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
+  <version>6.31.0</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
   <name>grpc-google-cloud-spanner-v1</name>
   <description>GRPC library for grpc-google-cloud-spanner-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index e3595e26f22..1bcf2ec5264 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-spanner-parent</artifactId>
   <packaging>pom</packaging>
-  <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+  <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   <name>Google Cloud Spanner Parent</name>
   <url>https://github.com/googleapis/java-spanner</url>
   <description>
@@ -62,37 +62,37 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-admin-instance-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-spanner-admin-database-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:grpc-google-cloud-spanner-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-admin-instance-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-instance-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-spanner-admin-database-v1</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
+        <version>6.31.0</version><!-- {x-version-update:grpc-google-cloud-spanner-admin-database-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner</artifactId>
-        <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+        <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
       </dependency>
 
       <dependency>
diff --git a/proto-google-cloud-spanner-admin-database-v1/pom.xml b/proto-google-cloud-spanner-admin-database-v1/pom.xml
index 6dcd2e807ee..d707485840b 100644
--- a/proto-google-cloud-spanner-admin-database-v1/pom.xml
+++ b/proto-google-cloud-spanner-admin-database-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-spanner-admin-database-v1</artifactId>
-  <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
+  <version>6.31.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-database-v1:current} -->
   <name>proto-google-cloud-spanner-admin-database-v1</name>
   <description>PROTO library for proto-google-cloud-spanner-admin-database-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/proto-google-cloud-spanner-admin-instance-v1/pom.xml b/proto-google-cloud-spanner-admin-instance-v1/pom.xml
index ec005778f18..3c3484faf86 100644
--- a/proto-google-cloud-spanner-admin-instance-v1/pom.xml
+++ b/proto-google-cloud-spanner-admin-instance-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-spanner-admin-instance-v1</artifactId>
-  <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
+  <version>6.31.0</version><!-- {x-version-update:proto-google-cloud-spanner-admin-instance-v1:current} -->
   <name>proto-google-cloud-spanner-admin-instance-v1</name>
   <description>PROTO library for proto-google-cloud-spanner-admin-instance-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/proto-google-cloud-spanner-v1/pom.xml b/proto-google-cloud-spanner-v1/pom.xml
index 8260c0d1021..0e9ee080955 100644
--- a/proto-google-cloud-spanner-v1/pom.xml
+++ b/proto-google-cloud-spanner-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-spanner-v1</artifactId>
-  <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
+  <version>6.31.0</version><!-- {x-version-update:proto-google-cloud-spanner-v1:current} -->
   <name>proto-google-cloud-spanner-v1</name>
   <description>PROTO library for proto-google-cloud-spanner-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-spanner-parent</artifactId>
-    <version>6.30.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner:current} -->
+    <version>6.31.0</version><!-- {x-version-update:google-cloud-spanner:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 060b1ac23da..9f503b73f0c 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -31,7 +31,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-spanner</artifactId>
-      <version>6.30.3-SNAPSHOT</version>
+      <version>6.31.0</version>
     </dependency>
     <!-- {x-version-update-end} -->
     
diff --git a/versions.txt b/versions.txt
index e07b98e9bea..7316c9c5de8 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,10 +1,10 @@
 # Format:
 # module:released-version:current-version
 
-proto-google-cloud-spanner-admin-instance-v1:6.30.2:6.30.3-SNAPSHOT
-proto-google-cloud-spanner-v1:6.30.2:6.30.3-SNAPSHOT
-proto-google-cloud-spanner-admin-database-v1:6.30.2:6.30.3-SNAPSHOT
-grpc-google-cloud-spanner-v1:6.30.2:6.30.3-SNAPSHOT
-grpc-google-cloud-spanner-admin-instance-v1:6.30.2:6.30.3-SNAPSHOT
-grpc-google-cloud-spanner-admin-database-v1:6.30.2:6.30.3-SNAPSHOT
-google-cloud-spanner:6.30.2:6.30.3-SNAPSHOT
+proto-google-cloud-spanner-admin-instance-v1:6.31.0:6.31.0
+proto-google-cloud-spanner-v1:6.31.0:6.31.0
+proto-google-cloud-spanner-admin-database-v1:6.31.0:6.31.0
+grpc-google-cloud-spanner-v1:6.31.0:6.31.0
+grpc-google-cloud-spanner-admin-instance-v1:6.31.0:6.31.0
+grpc-google-cloud-spanner-admin-database-v1:6.31.0:6.31.0
+google-cloud-spanner:6.31.0:6.31.0