diff --git a/adapter/avro/pom.xml b/adapter/avro/pom.xml
index 18c48a0e8f..4f7f90d7a9 100644
--- a/adapter/avro/pom.xml
+++ b/adapter/avro/pom.xml
@@ -23,7 +23,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/adapter/jdbc/pom.xml b/adapter/jdbc/pom.xml
index a0819d7aef..9ff44593ff 100644
--- a/adapter/jdbc/pom.xml
+++ b/adapter/jdbc/pom.xml
@@ -23,7 +23,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/adapter/orc/pom.xml b/adapter/orc/pom.xml
index fbb72d6c19..50a9b3a603 100644
--- a/adapter/orc/pom.xml
+++ b/adapter/orc/pom.xml
@@ -23,7 +23,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/algorithm/pom.xml b/algorithm/pom.xml
index 116be9aebf..24adcefa6f 100644
--- a/algorithm/pom.xml
+++ b/algorithm/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
   <artifactId>arrow-algorithm</artifactId>
   <name>Arrow Algorithms</name>
diff --git a/arrow-variant/pom.xml b/arrow-variant/pom.xml
index fea724824b..e578626dd4 100644
--- a/arrow-variant/pom.xml
+++ b/arrow-variant/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
   <artifactId>arrow-variant</artifactId>
   <name>Arrow Variant</name>
diff --git a/bom/pom.xml b/bom/pom.xml
index 6a4f741fca..f9200a7e8d 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -29,7 +29,7 @@ under the License.
 
   <groupId>org.apache.arrow</groupId>
   <artifactId>arrow-bom</artifactId>
-  <version>19.0.0</version>
+  <version>20.0.0-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>Arrow Bill of Materials</name>
@@ -68,7 +68,7 @@ under the License.
   <scm child.scm.connection.inherit.append.path="false" child.scm.developerConnection.inherit.append.path="false" child.scm.url.inherit.append.path="false">
     <connection>scm:git:https://github.com/apache/arrow-java.git</connection>
     <developerConnection>scm:git:https://github.com/apache/arrow-java.git</developerConnection>
-    <tag>v19.0.0</tag>
+    <tag>main</tag>
     <url>https://github.com/apache/arrow-java/tree/${project.scm.tag}</url>
   </scm>
 
diff --git a/c/pom.xml b/c/pom.xml
index b0a7ffe41d..27b6619c4c 100644
--- a/c/pom.xml
+++ b/c/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>arrow-c-data</artifactId>
diff --git a/compression/pom.xml b/compression/pom.xml
index 92144addc4..945738d2b8 100644
--- a/compression/pom.xml
+++ b/compression/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
   <artifactId>arrow-compression</artifactId>
   <name>Arrow Compression</name>
diff --git a/dataset/pom.xml b/dataset/pom.xml
index df5620c641..7a0210ce95 100644
--- a/dataset/pom.xml
+++ b/dataset/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>arrow-dataset</artifactId>
diff --git a/flight/flight-core/pom.xml b/flight/flight-core/pom.xml
index fbed544a1b..92490dd67b 100644
--- a/flight/flight-core/pom.xml
+++ b/flight/flight-core/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-flight</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>flight-core</artifactId>
diff --git a/flight/flight-integration-tests/pom.xml b/flight/flight-integration-tests/pom.xml
index 5ee7c6fc14..ec81162e59 100644
--- a/flight/flight-integration-tests/pom.xml
+++ b/flight/flight-integration-tests/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-flight</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>flight-integration-tests</artifactId>
diff --git a/flight/flight-sql-jdbc-core/pom.xml b/flight/flight-sql-jdbc-core/pom.xml
index d6fa11688d..b240c10fd2 100644
--- a/flight/flight-sql-jdbc-core/pom.xml
+++ b/flight/flight-sql-jdbc-core/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-flight</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>flight-sql-jdbc-core</artifactId>
diff --git a/flight/flight-sql-jdbc-driver/pom.xml b/flight/flight-sql-jdbc-driver/pom.xml
index e6f23bcb08..55de7221ec 100644
--- a/flight/flight-sql-jdbc-driver/pom.xml
+++ b/flight/flight-sql-jdbc-driver/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-flight</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>flight-sql-jdbc-driver</artifactId>
diff --git a/flight/flight-sql/pom.xml b/flight/flight-sql/pom.xml
index a58b76acda..b7c8931391 100644
--- a/flight/flight-sql/pom.xml
+++ b/flight/flight-sql/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-flight</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>flight-sql</artifactId>
diff --git a/flight/pom.xml b/flight/pom.xml
index a5a40a834a..30f75fa27e 100644
--- a/flight/pom.xml
+++ b/flight/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
   <artifactId>arrow-flight</artifactId>
 
diff --git a/format/pom.xml b/format/pom.xml
index c09fad32fb..8c2f2d3387 100644
--- a/format/pom.xml
+++ b/format/pom.xml
@@ -23,7 +23,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>arrow-format</artifactId>
diff --git a/gandiva/pom.xml b/gandiva/pom.xml
index d26edeb9d6..190bf016ce 100644
--- a/gandiva/pom.xml
+++ b/gandiva/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <groupId>org.apache.arrow.gandiva</groupId>
diff --git a/memory/memory-core/pom.xml b/memory/memory-core/pom.xml
index 586fddae1a..1c7b6f8834 100644
--- a/memory/memory-core/pom.xml
+++ b/memory/memory-core/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-memory</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>arrow-memory-core</artifactId>
diff --git a/memory/memory-netty-buffer-patch/pom.xml b/memory/memory-netty-buffer-patch/pom.xml
index cb38efa345..039b2aa04a 100644
--- a/memory/memory-netty-buffer-patch/pom.xml
+++ b/memory/memory-netty-buffer-patch/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-memory</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>arrow-memory-netty-buffer-patch</artifactId>
diff --git a/memory/memory-netty/pom.xml b/memory/memory-netty/pom.xml
index f33eb95e44..4218910980 100644
--- a/memory/memory-netty/pom.xml
+++ b/memory/memory-netty/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-memory</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>arrow-memory-netty</artifactId>
diff --git a/memory/memory-unsafe/pom.xml b/memory/memory-unsafe/pom.xml
index d941fee645..3fafb42802 100644
--- a/memory/memory-unsafe/pom.xml
+++ b/memory/memory-unsafe/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-memory</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>arrow-memory-unsafe</artifactId>
diff --git a/memory/pom.xml b/memory/pom.xml
index af953ccd21..4ea3d1f9ca 100644
--- a/memory/pom.xml
+++ b/memory/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
   <artifactId>arrow-memory</artifactId>
   <packaging>pom</packaging>
diff --git a/performance/pom.xml b/performance/pom.xml
index 685f433f05..96ea5291ad 100644
--- a/performance/pom.xml
+++ b/performance/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
   <artifactId>arrow-performance</artifactId>
   <packaging>jar</packaging>
diff --git a/pom.xml b/pom.xml
index 0b0aa58232..c322abea88 100644
--- a/pom.xml
+++ b/pom.xml
@@ -28,7 +28,7 @@ under the License.
 
   <groupId>org.apache.arrow</groupId>
   <artifactId>arrow-java-root</artifactId>
-  <version>19.0.0</version>
+  <version>20.0.0-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>Apache Arrow Java Root POM</name>
@@ -82,7 +82,7 @@ under the License.
   <scm child.scm.connection.inherit.append.path="false" child.scm.developerConnection.inherit.append.path="false" child.scm.url.inherit.append.path="false">
     <connection>scm:git:https://github.com/apache/arrow-java.git</connection>
     <developerConnection>scm:git:https://github.com/apache/arrow-java.git</developerConnection>
-    <tag>v19.0.0</tag>
+    <tag>main</tag>
     <url>https://github.com/apache/arrow-java/tree/${project.scm.tag}</url>
   </scm>
 
@@ -92,7 +92,7 @@ under the License.
   </issueManagement>
 
   <properties>
-    <project.build.outputTimestamp>1773307790</project.build.outputTimestamp>
+    <project.build.outputTimestamp>1773644827</project.build.outputTimestamp>
     <target.gen.source.path>${project.build.directory}/generated-sources</target.gen.source.path>
     <dep.junit.platform.version>1.9.0</dep.junit.platform.version>
     <dep.junit.jupiter.version>5.12.2</dep.junit.jupiter.version>
diff --git a/tools/pom.xml b/tools/pom.xml
index 9e557bab76..64634b9abe 100644
--- a/tools/pom.xml
+++ b/tools/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
   <artifactId>arrow-tools</artifactId>
   <name>Arrow Tools</name>
diff --git a/vector/pom.xml b/vector/pom.xml
index bc64cbc76b..4d247961c9 100644
--- a/vector/pom.xml
+++ b/vector/pom.xml
@@ -22,7 +22,7 @@ under the License.
   <parent>
     <groupId>org.apache.arrow</groupId>
     <artifactId>arrow-java-root</artifactId>
-    <version>19.0.0</version>
+    <version>20.0.0-SNAPSHOT</version>
   </parent>
   <artifactId>arrow-vector</artifactId>
   <name>Arrow Vectors</name>