diff --git a/core/pom.xml b/core/pom.xml
index 21d0d2362..94d82e032 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -23,10 +23,10 @@
   <parent>
     <groupId>com.google.cloud.sql</groupId>
     <artifactId>jdbc-socket-factory-parent</artifactId>
-    <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
+    <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
   </parent>
   <artifactId>jdbc-socket-factory-core</artifactId>
-  <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-core:current} -->
+  <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-core:current} -->
   <packaging>jar</packaging>
 
   <name>Cloud SQL Core Socket Factory (Core Library, don't depend on this directly)</name>
diff --git a/jdbc/mariadb/pom.xml b/jdbc/mariadb/pom.xml
index c261f6d7b..7437e6d5a 100644
--- a/jdbc/mariadb/pom.xml
+++ b/jdbc/mariadb/pom.xml
@@ -22,11 +22,11 @@
   <parent>
     <groupId>com.google.cloud.sql</groupId>
     <artifactId>jdbc-socket-factory-parent</artifactId>
-    <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
+    <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <artifactId>mariadb-socket-factory</artifactId>
-  <version>1.28.3</version><!-- {x-version-update:mariadb-socket-factory:current} -->
+  <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:mariadb-socket-factory:current} -->
   <packaging>jar</packaging>
 
   <name>Cloud SQL MariaDB Socket Factory</name>
diff --git a/jdbc/mysql-j-8/pom.xml b/jdbc/mysql-j-8/pom.xml
index e596f14f0..a736653c7 100644
--- a/jdbc/mysql-j-8/pom.xml
+++ b/jdbc/mysql-j-8/pom.xml
@@ -23,12 +23,12 @@
   <parent>
     <groupId>com.google.cloud.sql</groupId>
     <artifactId>jdbc-socket-factory-parent</artifactId>
-    <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
+    <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
   <artifactId>mysql-socket-factory-connector-j-8</artifactId>
-  <version>1.28.3</version><!-- {x-version-update:mysql-socket-factory-connector-j-8:current} -->
+  <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:mysql-socket-factory-connector-j-8:current} -->
   <packaging>jar</packaging>
 
   <name>Cloud SQL MySQL Socket Factory (for Connector/J 8.x)</name>
diff --git a/jdbc/postgres/pom.xml b/jdbc/postgres/pom.xml
index 01373f6b9..33ba21ca9 100644
--- a/jdbc/postgres/pom.xml
+++ b/jdbc/postgres/pom.xml
@@ -22,11 +22,11 @@
   <parent>
     <groupId>com.google.cloud.sql</groupId>
     <artifactId>jdbc-socket-factory-parent</artifactId>
-    <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
+    <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <artifactId>postgres-socket-factory</artifactId>
-  <version>1.28.3</version><!-- {x-version-update:postgres-socket-factory:current} -->
+  <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:postgres-socket-factory:current} -->
   <packaging>jar</packaging>
 
   <name>Cloud SQL Postgres Socket Factory</name>
diff --git a/jdbc/sqlserver/pom.xml b/jdbc/sqlserver/pom.xml
index 71e9e32fe..327b9f40f 100644
--- a/jdbc/sqlserver/pom.xml
+++ b/jdbc/sqlserver/pom.xml
@@ -22,11 +22,11 @@
   <parent>
     <groupId>com.google.cloud.sql</groupId>
     <artifactId>jdbc-socket-factory-parent</artifactId>
-    <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
+    <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <artifactId>cloud-sql-connector-jdbc-sqlserver</artifactId>
-    <version>1.28.3</version><!-- {x-version-update:cloud-sql-connector-jdbc-sqlserver:current} -->
+    <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:cloud-sql-connector-jdbc-sqlserver:current} -->
   <packaging>jar</packaging>
 
   <name>Cloud SQL JDBC Connector for SQL Server</name>
diff --git a/pom.xml b/pom.xml
index ed58d3cd7..e9bec333d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
   <groupId>com.google.cloud.sql</groupId>
   <artifactId>jdbc-socket-factory-parent</artifactId>
   <packaging>pom</packaging>
-  <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
+  <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
 
   <parent>
     <groupId>com.google.cloud</groupId>
diff --git a/r2dbc/core/pom.xml b/r2dbc/core/pom.xml
index bef18dca3..9cd3e3561 100644
--- a/r2dbc/core/pom.xml
+++ b/r2dbc/core/pom.xml
@@ -21,11 +21,11 @@
   <parent>
     <groupId>com.google.cloud.sql</groupId>
     <artifactId>jdbc-socket-factory-parent</artifactId>
-    <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
+    <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <artifactId>cloud-sql-connector-r2dbc-core</artifactId>
-  <version>1.28.3</version><!-- {x-version-update:cloud-sql-connector-r2dbc-core:current} -->
+  <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:cloud-sql-connector-r2dbc-core:current} -->
   <packaging>jar</packaging>
 
   <name>Cloud SQL R2DBC Connection Factory (R2DBC Core Library, don't depend on this directly)</name>
diff --git a/r2dbc/mariadb/pom.xml b/r2dbc/mariadb/pom.xml
index 3b63a5472..2ede087f0 100644
--- a/r2dbc/mariadb/pom.xml
+++ b/r2dbc/mariadb/pom.xml
@@ -22,12 +22,12 @@
   <parent>
     <groupId>com.google.cloud.sql</groupId>
     <artifactId>jdbc-socket-factory-parent</artifactId>
-    <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
+    <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <groupId>com.google.cloud</groupId>
   <artifactId>cloud-sql-connector-r2dbc-mariadb</artifactId>
-  <version>1.28.3</version><!-- {x-version-update:cloud-sql-connector-r2dbc-mariadb:current} -->
+  <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:cloud-sql-connector-r2dbc-mariadb:current} -->
   <packaging>jar</packaging>
 
   <name>Google Cloud SQL R2DBC Connector for MariaDB</name>
diff --git a/r2dbc/mysql/pom.xml b/r2dbc/mysql/pom.xml
index a30d8e177..323bde5de 100644
--- a/r2dbc/mysql/pom.xml
+++ b/r2dbc/mysql/pom.xml
@@ -22,11 +22,11 @@
   <parent>
     <groupId>com.google.cloud.sql</groupId>
     <artifactId>jdbc-socket-factory-parent</artifactId>
-    <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
+    <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <artifactId>cloud-sql-connector-r2dbc-mysql</artifactId>
-  <version>1.28.3</version><!-- {x-version-update:cloud-sql-connector-r2dbc-mysql:current} -->
+  <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:cloud-sql-connector-r2dbc-mysql:current} -->
   <packaging>jar</packaging>
 
   <name>Cloud SQL R2DBC Connection Factory for MySQL</name>
diff --git a/r2dbc/postgres/pom.xml b/r2dbc/postgres/pom.xml
index 10952395f..fee462a16 100644
--- a/r2dbc/postgres/pom.xml
+++ b/r2dbc/postgres/pom.xml
@@ -22,11 +22,11 @@
   <parent>
     <groupId>com.google.cloud.sql</groupId>
     <artifactId>jdbc-socket-factory-parent</artifactId>
-    <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
+    <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <artifactId>cloud-sql-connector-r2dbc-postgres</artifactId>
-  <version>1.28.3</version><!-- {x-version-update:cloud-sql-connector-r2dbc-postgres:current} -->
+  <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:cloud-sql-connector-r2dbc-postgres:current} -->
   <packaging>jar</packaging>
 
   <name>Cloud SQL R2DBC Connection Factory for Postgres</name>
diff --git a/r2dbc/sqlserver/pom.xml b/r2dbc/sqlserver/pom.xml
index 414941efa..9c565f376 100644
--- a/r2dbc/sqlserver/pom.xml
+++ b/r2dbc/sqlserver/pom.xml
@@ -22,11 +22,11 @@
   <parent>
     <groupId>com.google.cloud.sql</groupId>
     <artifactId>jdbc-socket-factory-parent</artifactId>
-    <version>1.28.3</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
+    <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:jdbc-socket-factory-parent:current} -->
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <artifactId>cloud-sql-connector-r2dbc-sqlserver</artifactId>
-  <version>1.28.3</version><!-- {x-version-update:cloud-sql-connector-r2dbc-sqlserver:current} -->
+  <version>1.28.4-SNAPSHOT</version><!-- {x-version-update:cloud-sql-connector-r2dbc-sqlserver:current} -->
   <packaging>jar</packaging>
 
   <name>Cloud SQL R2DBC Connection Factory for SQL Server</name>
diff --git a/versions.txt b/versions.txt
index 36b613dbe..f39b10db8 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,15 +1,15 @@
 # Format:
 # module:released-version:current-version
 
-jdbc-socket-factory-parent:1.28.3:1.28.3
-jdbc-socket-factory-core:1.28.3:1.28.3
-mariadb-socket-factory:1.28.3:1.28.3
-mysql-socket-factory:1.28.3:1.28.3
-mysql-socket-factory-connector-j-8:1.28.3:1.28.3
-postgres-socket-factory:1.28.3:1.28.3
-cloud-sql-connector-jdbc-sqlserver:1.28.3:1.28.3
-cloud-sql-connector-r2dbc-core:1.28.3:1.28.3
-cloud-sql-connector-r2dbc-mariadb:1.28.3:1.28.3
-cloud-sql-connector-r2dbc-mysql:1.28.3:1.28.3
-cloud-sql-connector-r2dbc-postgres:1.28.3:1.28.3
-cloud-sql-connector-r2dbc-sqlserver:1.28.3:1.28.3
+jdbc-socket-factory-parent:1.28.3:1.28.4-SNAPSHOT
+jdbc-socket-factory-core:1.28.3:1.28.4-SNAPSHOT
+mariadb-socket-factory:1.28.3:1.28.4-SNAPSHOT
+mysql-socket-factory:1.28.3:1.28.4-SNAPSHOT
+mysql-socket-factory-connector-j-8:1.28.3:1.28.4-SNAPSHOT
+postgres-socket-factory:1.28.3:1.28.4-SNAPSHOT
+cloud-sql-connector-jdbc-sqlserver:1.28.3:1.28.4-SNAPSHOT
+cloud-sql-connector-r2dbc-core:1.28.3:1.28.4-SNAPSHOT
+cloud-sql-connector-r2dbc-mariadb:1.28.3:1.28.4-SNAPSHOT
+cloud-sql-connector-r2dbc-mysql:1.28.3:1.28.4-SNAPSHOT
+cloud-sql-connector-r2dbc-postgres:1.28.3:1.28.4-SNAPSHOT
+cloud-sql-connector-r2dbc-sqlserver:1.28.3:1.28.4-SNAPSHOT