diff --git a/google-cloud-logging-bom/pom.xml b/google-cloud-logging-bom/pom.xml
index 6767e10cc..61ca10faf 100644
--- a/google-cloud-logging-bom/pom.xml
+++ b/google-cloud-logging-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-logging-bom</artifactId>
-  <version>3.20.3</version><!-- {x-version-update:google-cloud-logging:current} -->
+  <version>3.20.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-logging:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -53,17 +53,17 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-logging</artifactId>
-        <version>3.20.3</version><!-- {x-version-update:google-cloud-logging:current} -->
+        <version>3.20.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-logging:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-logging-v2</artifactId>
-        <version>0.109.3</version><!-- {x-version-update:grpc-google-cloud-logging-v2:current} -->
+        <version>0.109.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-logging-v2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-logging-v2</artifactId>
-        <version>0.109.3</version><!-- {x-version-update:proto-google-cloud-logging-v2:current} -->
+        <version>0.109.4-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-logging-v2:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-logging/pom.xml b/google-cloud-logging/pom.xml
index f40e60789..860124280 100644
--- a/google-cloud-logging/pom.xml
+++ b/google-cloud-logging/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-logging</artifactId>
-  <version>3.20.3</version><!-- {x-version-update:google-cloud-logging:current} -->
+  <version>3.20.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-logging:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Logging</name>
   <url>https://github.com/googleapis/java-logging</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-logging-parent</artifactId>
-    <version>3.20.3</version><!-- {x-version-update:google-cloud-logging:current} -->
+    <version>3.20.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-logging:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-logging</site.installationModule>
diff --git a/google-cloud-logging/src/main/java/com/google/cloud/logging/Instrumentation.java b/google-cloud-logging/src/main/java/com/google/cloud/logging/Instrumentation.java
index 204e28437..42bc35379 100644
--- a/google-cloud-logging/src/main/java/com/google/cloud/logging/Instrumentation.java
+++ b/google-cloud-logging/src/main/java/com/google/cloud/logging/Instrumentation.java
@@ -40,7 +40,7 @@ public final class Instrumentation {
   // See
   // https://github.com/googleapis/release-please/blob/main/docs/customizing.md#updating-arbitrary-files
   // {x-version-update-start:google-cloud-logging:current}
-  public static final String DEFAULT_INSTRUMENTATION_VERSION = "3.20.3";
+  public static final String DEFAULT_INSTRUMENTATION_VERSION = "3.20.4-SNAPSHOT";
   // {x-version-update-end}
   public static final String INSTRUMENTATION_LOG_NAME = "diagnostic-log";
   public static final int MAX_DIAGNOSTIC_VALUE_LENGTH = 14;
diff --git a/grpc-google-cloud-logging-v2/pom.xml b/grpc-google-cloud-logging-v2/pom.xml
index a69bc804c..8d19cfe15 100644
--- a/grpc-google-cloud-logging-v2/pom.xml
+++ b/grpc-google-cloud-logging-v2/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-logging-v2</artifactId>
-  <version>0.109.3</version><!-- {x-version-update:grpc-google-cloud-logging-v2:current} -->
+  <version>0.109.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-logging-v2:current} -->
   <name>grpc-google-cloud-logging-v2</name>
   <description>GRPC library for grpc-google-cloud-logging-v2</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-logging-parent</artifactId>
-    <version>3.20.3</version><!-- {x-version-update:google-cloud-logging:current} -->
+    <version>3.20.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-logging:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 8c99abde2..4a8b5b2bd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-logging-parent</artifactId>
   <packaging>pom</packaging>
-  <version>3.20.3</version><!-- {x-version-update:google-cloud-logging:current} -->
+  <version>3.20.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-logging:current} -->
   <name>Google Cloud Logging Parent</name>
   <url>https://github.com/googleapis/java-logging</url>
   <description>
@@ -80,17 +80,17 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-logging-v2</artifactId>
-        <version>0.109.3</version><!-- {x-version-update:proto-google-cloud-logging-v2:current} -->
+        <version>0.109.4-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-logging-v2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-logging-v2</artifactId>
-        <version>0.109.3</version><!-- {x-version-update:grpc-google-cloud-logging-v2:current} -->
+        <version>0.109.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-logging-v2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-logging</artifactId>
-        <version>3.20.3</version><!-- {x-version-update:google-cloud-logging:current} -->
+        <version>3.20.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-logging:current} -->
       </dependency>
 
       <dependency>
diff --git a/proto-google-cloud-logging-v2/pom.xml b/proto-google-cloud-logging-v2/pom.xml
index e12873101..1127fe550 100644
--- a/proto-google-cloud-logging-v2/pom.xml
+++ b/proto-google-cloud-logging-v2/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-logging-v2</artifactId>
-  <version>0.109.3</version><!-- {x-version-update:proto-google-cloud-logging-v2:current} -->
+  <version>0.109.4-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-logging-v2:current} -->
   <name>proto-google-cloud-logging-v2</name>
   <description>PROTO library for proto-google-cloud-logging-v2</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-logging-parent</artifactId>
-    <version>3.20.3</version><!-- {x-version-update:google-cloud-logging:current} -->
+    <version>3.20.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-logging:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index d965c79db..2d9812973 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-logging</artifactId>
-      <version>3.20.3</version>
+      <version>3.20.4-SNAPSHOT</version>
     </dependency>
     <!-- {x-version-update-end} -->
     <dependency>
diff --git a/versions.txt b/versions.txt
index 9f1cdd40a..2de1b9190 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,6 +1,6 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-logging:3.20.3:3.20.3
-grpc-google-cloud-logging-v2:0.109.3:0.109.3
-proto-google-cloud-logging-v2:0.109.3:0.109.3
+google-cloud-logging:3.20.3:3.20.4-SNAPSHOT
+grpc-google-cloud-logging-v2:0.109.3:0.109.4-SNAPSHOT
+proto-google-cloud-logging-v2:0.109.3:0.109.4-SNAPSHOT