diff --git a/java-monitoring/google-cloud-monitoring-bom/pom.xml b/java-monitoring/google-cloud-monitoring-bom/pom.xml
index 971f0d7012f8..c8292889888a 100644
--- a/java-monitoring/google-cloud-monitoring-bom/pom.xml
+++ b/java-monitoring/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>3.4.2</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+  <version>3.4.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -52,17 +52,17 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-monitoring</artifactId>
-        <version>3.4.2</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+        <version>3.4.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-monitoring-v3</artifactId>
-        <version>3.4.2</version><!-- {x-version-update:grpc-google-cloud-monitoring-v3:current} -->
+        <version>3.4.3-SNAPSHOT</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>3.4.2</version><!-- {x-version-update:proto-google-cloud-monitoring-v3:current} -->
+        <version>3.4.3-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-monitoring-v3:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/java-monitoring/google-cloud-monitoring/pom.xml b/java-monitoring/google-cloud-monitoring/pom.xml
index 7725eec702e7..1e2a411784c1 100644
--- a/java-monitoring/google-cloud-monitoring/pom.xml
+++ b/java-monitoring/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>3.4.2</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+  <version>3.4.3-SNAPSHOT</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>3.4.2</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+    <version>3.4.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-monitoring</site.installationModule>
diff --git a/java-monitoring/grpc-google-cloud-monitoring-v3/pom.xml b/java-monitoring/grpc-google-cloud-monitoring-v3/pom.xml
index 861e346f1489..55e7cd70e3a2 100644
--- a/java-monitoring/grpc-google-cloud-monitoring-v3/pom.xml
+++ b/java-monitoring/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>3.4.2</version><!-- {x-version-update:grpc-google-cloud-monitoring-v3:current} -->
+  <version>3.4.3-SNAPSHOT</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>3.4.2</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+    <version>3.4.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-monitoring/pom.xml b/java-monitoring/pom.xml
index 41a13d8c1579..7e516d3389ea 100644
--- a/java-monitoring/pom.xml
+++ b/java-monitoring/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-monitoring-parent</artifactId>
   <packaging>pom</packaging>
-  <version>3.4.2</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+  <version>3.4.3-SNAPSHOT</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>3.4.2</version><!-- {x-version-update:proto-google-cloud-monitoring-v3:current} -->
+        <version>3.4.3-SNAPSHOT</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>3.4.2</version><!-- {x-version-update:grpc-google-cloud-monitoring-v3:current} -->
+        <version>3.4.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-monitoring-v3:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-monitoring</artifactId>
-        <version>3.4.2</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+        <version>3.4.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
       </dependency>
 
       <dependency>
diff --git a/java-monitoring/proto-google-cloud-monitoring-v3/pom.xml b/java-monitoring/proto-google-cloud-monitoring-v3/pom.xml
index b7e7c78fe5f2..1225ed3247ab 100644
--- a/java-monitoring/proto-google-cloud-monitoring-v3/pom.xml
+++ b/java-monitoring/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>3.4.2</version><!-- {x-version-update:proto-google-cloud-monitoring-v3:current} -->
+  <version>3.4.3-SNAPSHOT</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>3.4.2</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+    <version>3.4.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-monitoring/samples/snapshot/pom.xml b/java-monitoring/samples/snapshot/pom.xml
index 328dfe050658..aa3c65ef4099 100644
--- a/java-monitoring/samples/snapshot/pom.xml
+++ b/java-monitoring/samples/snapshot/pom.xml
@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-monitoring</artifactId>
-      <version>3.4.2</version>
+      <version>3.4.3-SNAPSHOT</version>
     </dependency>
     <!-- {x-version-update-end} -->
     <dependency>
diff --git a/java-monitoring/versions.txt b/java-monitoring/versions.txt
index 0914fe74aa13..e884a39bf310 100644
--- a/java-monitoring/versions.txt
+++ b/java-monitoring/versions.txt
@@ -1,6 +1,6 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-monitoring:3.4.2:3.4.2
-grpc-google-cloud-monitoring-v3:3.4.2:3.4.2
-proto-google-cloud-monitoring-v3:3.4.2:3.4.2
+google-cloud-monitoring:3.4.2:3.4.3-SNAPSHOT
+grpc-google-cloud-monitoring-v3:3.4.2:3.4.3-SNAPSHOT
+proto-google-cloud-monitoring-v3:3.4.2:3.4.3-SNAPSHOT