diff --git a/CHANGELOG.md b/CHANGELOG.md
index af8425bb..14def54a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,26 @@
 # Changelog
 
+## [3.1.0](https://www.github.com/googleapis/java-monitoring/compare/v3.0.8...v3.1.0) (2021-10-19)
+
+
+### Features
+
+* add CreateServiceTimeSeries RPC ([bdfc556](https://www.github.com/googleapis/java-monitoring/commit/bdfc5568896b8e79c37308a701249bd0414377d0))
+* Added support for logs-based alerts: https://cloud.google.com/logging/docs/alerting/log-based-alerts ([bdfc556](https://www.github.com/googleapis/java-monitoring/commit/bdfc5568896b8e79c37308a701249bd0414377d0))
+* Added support for user-defined labels on cloud monitoring's Service and ServiceLevelObjective objects ([#663](https://www.github.com/googleapis/java-monitoring/issues/663)) ([bdfc556](https://www.github.com/googleapis/java-monitoring/commit/bdfc5568896b8e79c37308a701249bd0414377d0))
+* Introduce Native Image testing build script changes ([#701](https://www.github.com/googleapis/java-monitoring/issues/701)) ([706b654](https://www.github.com/googleapis/java-monitoring/commit/706b654e08cec92079944708b80b7e2b61de393e))
+
+
+### Bug Fixes
+
+* mark required fields in QueryTimeSeriesRequest as required ([bdfc556](https://www.github.com/googleapis/java-monitoring/commit/bdfc5568896b8e79c37308a701249bd0414377d0))
+* Reintroduce deprecated field/enum for backward compatibility ([bdfc556](https://www.github.com/googleapis/java-monitoring/commit/bdfc5568896b8e79c37308a701249bd0414377d0))
+
+
+### Documentation
+
+* fix typo in alert.proto ([bdfc556](https://www.github.com/googleapis/java-monitoring/commit/bdfc5568896b8e79c37308a701249bd0414377d0))
+
 ### [3.0.8](https://www.github.com/googleapis/java-monitoring/compare/v3.0.7...v3.0.8) (2021-10-19)
 
 
diff --git a/google-cloud-monitoring-bom/pom.xml b/google-cloud-monitoring-bom/pom.xml
index 4d73bea0..bbfe74a0 100644
--- a/google-cloud-monitoring-bom/pom.xml
+++ b/google-cloud-monitoring-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-monitoring-bom</artifactId>
-  <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+  <version>3.1.0</version><!-- {x-version-update:google-cloud-monitoring:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -53,17 +53,17 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-monitoring</artifactId>
-        <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+        <version>3.1.0</version><!-- {x-version-update:google-cloud-monitoring:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-monitoring-v3</artifactId>
-        <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-monitoring-v3:current} -->
+        <version>3.1.0</version><!-- {x-version-update:grpc-google-cloud-monitoring-v3:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-monitoring-v3</artifactId>
-        <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-monitoring-v3:current} -->
+        <version>3.1.0</version><!-- {x-version-update:proto-google-cloud-monitoring-v3:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-monitoring/pom.xml b/google-cloud-monitoring/pom.xml
index 861a37da..f99190e4 100644
--- a/google-cloud-monitoring/pom.xml
+++ b/google-cloud-monitoring/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-monitoring</artifactId>
-  <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+  <version>3.1.0</version><!-- {x-version-update:google-cloud-monitoring:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Monitoring</name>
   <url>https://github.com/googleapis/java-monitoring</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-monitoring-parent</artifactId>
-    <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+    <version>3.1.0</version><!-- {x-version-update:google-cloud-monitoring:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-monitoring</site.installationModule>
diff --git a/grpc-google-cloud-monitoring-v3/pom.xml b/grpc-google-cloud-monitoring-v3/pom.xml
index 364824ec..a1a4760e 100644
--- a/grpc-google-cloud-monitoring-v3/pom.xml
+++ b/grpc-google-cloud-monitoring-v3/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-monitoring-v3</artifactId>
-  <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-monitoring-v3:current} -->
+  <version>3.1.0</version><!-- {x-version-update:grpc-google-cloud-monitoring-v3:current} -->
   <name>grpc-google-cloud-monitoring-v3</name>
   <description>GRPC library for grpc-google-cloud-monitoring-v3</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-monitoring-parent</artifactId>
-    <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+    <version>3.1.0</version><!-- {x-version-update:google-cloud-monitoring:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 939eb2da..d50c47bb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-monitoring-parent</artifactId>
   <packaging>pom</packaging>
-  <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+  <version>3.1.0</version><!-- {x-version-update:google-cloud-monitoring:current} -->
   <name>Google Cloud Monitoring Parent</name>
   <url>https://github.com/googleapis/java-monitoring</url>
   <description>
@@ -61,17 +61,17 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-monitoring-v3</artifactId>
-        <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-monitoring-v3:current} -->
+        <version>3.1.0</version><!-- {x-version-update:proto-google-cloud-monitoring-v3:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-monitoring-v3</artifactId>
-        <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-monitoring-v3:current} -->
+        <version>3.1.0</version><!-- {x-version-update:grpc-google-cloud-monitoring-v3:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-monitoring</artifactId>
-        <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+        <version>3.1.0</version><!-- {x-version-update:google-cloud-monitoring:current} -->
       </dependency>
 
       <dependency>
diff --git a/proto-google-cloud-monitoring-v3/pom.xml b/proto-google-cloud-monitoring-v3/pom.xml
index 3f89cf01..96d480ff 100644
--- a/proto-google-cloud-monitoring-v3/pom.xml
+++ b/proto-google-cloud-monitoring-v3/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-monitoring-v3</artifactId>
-  <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-monitoring-v3:current} -->
+  <version>3.1.0</version><!-- {x-version-update:proto-google-cloud-monitoring-v3:current} -->
   <name>proto-google-cloud-monitoring-v3</name>
   <description>PROTO library for proto-google-cloud-monitoring-v3</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-monitoring-parent</artifactId>
-    <version>3.0.9-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+    <version>3.1.0</version><!-- {x-version-update:google-cloud-monitoring:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index 74065335..b12ea17d 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-monitoring</artifactId>
-      <version>3.0.9-SNAPSHOT</version>
+      <version>3.1.0</version>
     </dependency>
     <!-- [END monitoring_install_without_bom] -->
     <!-- {x-version-update-end} -->
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 69a4052c..b05578d2 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-monitoring</artifactId>
-      <version>3.0.9-SNAPSHOT</version>
+      <version>3.1.0</version>
     </dependency>
     <!-- {x-version-update-end} -->
     <dependency>
diff --git a/versions.txt b/versions.txt
index 8021fc0e..329fd25e 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,6 +1,6 @@
 # Format:
 # module:released-version:current-version
 
-proto-google-cloud-monitoring-v3:3.0.8:3.0.9-SNAPSHOT
-grpc-google-cloud-monitoring-v3:3.0.8:3.0.9-SNAPSHOT
-google-cloud-monitoring:3.0.8:3.0.9-SNAPSHOT
\ No newline at end of file
+proto-google-cloud-monitoring-v3:3.1.0:3.1.0
+grpc-google-cloud-monitoring-v3:3.1.0:3.1.0
+google-cloud-monitoring:3.1.0:3.1.0
\ No newline at end of file