diff --git a/README.md b/README.md
index 63c2d41..7955fa2 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,16 @@ We provide script to check codes.
 ./dev/lint-python.sh -h # run this to see more usages         
 ```
 
+## Build
+
+We provide a script to build source distribution package.
+
+```shell
+./dev/build-source-distribution-package.sh
+```
+
+The package is under `dist/`.
+
 # Usage
 
 See Apache Paimon Python API [Doc](https://paimon.apache.org/docs/master/program-api/python-api/).
diff --git a/dev/build-source-distribution-package.sh b/dev/build-source-distribution-package.sh
new file mode 100755
index 0000000..461a52f
--- /dev/null
+++ b/dev/build-source-distribution-package.sh
@@ -0,0 +1,43 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+CURR_DIR=`pwd`
+BASE_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
+PROJECT_ROOT="${BASE_DIR}/../"
+
+# prepare bridge jar
+
+DEPS_DIR=${PROJECT_ROOT}/deps/jars
+rm -rf ${DEPS_DIR}
+mkdir -p ${DEPS_DIR}
+
+cd ${PROJECT_ROOT}/paimon-python-java-bridge
+
+# get bridge jar version
+JAR_VERSION=$(sed -n 's/.*<version>\(.*\)<\/version>.*/\1/p' pom.xml | head -n 1)
+
+mvn clean install -DskipTests
+cp "target/paimon-python-java-bridge-${JAR_VERSION}.jar" ${DEPS_DIR}
+
+cd ${CURR_DIR}
+
+# build source distribution package
+
+python setup.py sdist
+
+rm -rf ${DEPS_DIR}
+cd ${CURR_DIR}
diff --git a/pypaimon/api/table_read.py b/pypaimon/api/table_read.py
index 9fcb78c..60b31e7 100644
--- a/pypaimon/api/table_read.py
+++ b/pypaimon/api/table_read.py
@@ -18,12 +18,14 @@
 
 import pandas as pd
 import pyarrow as pa
-import ray
 
 from abc import ABC, abstractmethod
-from duckdb.duckdb import DuckDBPyConnection
 from pypaimon.api import Split
-from typing import List, Optional
+from typing import List, Optional, TYPE_CHECKING
+
+if TYPE_CHECKING:
+    import ray
+    from duckdb.duckdb import DuckDBPyConnection
 
 
 class TableRead(ABC):
@@ -46,9 +48,9 @@ def to_duckdb(
             self,
             splits: List[Split],
             table_name: str,
-            connection: Optional[DuckDBPyConnection] = None) -> DuckDBPyConnection:
+            connection: Optional["DuckDBPyConnection"] = None) -> "DuckDBPyConnection":
         """Convert splits into an in-memory DuckDB table which can be queried."""
 
     @abstractmethod
-    def to_ray(self, splits: List[Split]) -> ray.data.dataset.Dataset:
+    def to_ray(self, splits: List[Split]) -> "ray.data.dataset.Dataset":
         """Convert splits into a Ray dataset format."""
diff --git a/pypaimon/py4j/java_implementation.py b/pypaimon/py4j/java_implementation.py
index 17c6eda..ce90bc5 100644
--- a/pypaimon/py4j/java_implementation.py
+++ b/pypaimon/py4j/java_implementation.py
@@ -18,19 +18,20 @@
 
 # pypaimon.api implementation based on Java code & py4j lib
 
-import duckdb
 import pandas as pd
 import pyarrow as pa
-import ray
 
-from duckdb.duckdb import DuckDBPyConnection
 from pypaimon.py4j.java_gateway import get_gateway
 from pypaimon.py4j.util import java_utils, constants
 from pypaimon.api import \
     (catalog, table, read_builder, table_scan, split,
      table_read, write_builder, table_write, commit_message,
      table_commit, Schema, predicate)
-from typing import List, Iterator, Optional, Any
+from typing import List, Iterator, Optional, Any, TYPE_CHECKING
+
+if TYPE_CHECKING:
+    import ray
+    from duckdb.duckdb import DuckDBPyConnection
 
 
 class Catalog(catalog.Catalog):
@@ -171,12 +172,16 @@ def to_duckdb(
             self,
             splits: List[Split],
             table_name: str,
-            connection: Optional[DuckDBPyConnection] = None) -> DuckDBPyConnection:
+            connection: Optional["DuckDBPyConnection"] = None) -> "DuckDBPyConnection":
+        import duckdb
+
         con = connection or duckdb.connect(database=":memory:")
         con.register(table_name, self.to_arrow(splits))
         return con
 
-    def to_ray(self, splits: List[Split]) -> ray.data.dataset.Dataset:
+    def to_ray(self, splits: List[Split]) -> "ray.data.dataset.Dataset":
+        import ray
+
         return ray.data.from_arrow(self.to_arrow(splits))
 
     def _init(self):