diff --git a/src/blaxel/core/sandbox/__init__.py b/src/blaxel/core/sandbox/__init__.py
index 02c217f..38e952d 100644
--- a/src/blaxel/core/sandbox/__init__.py
+++ b/src/blaxel/core/sandbox/__init__.py
@@ -38,6 +38,7 @@
     SandboxConfiguration,
     SandboxCreateConfiguration,
     SandboxFilesystemFile,
+    SandboxUpdateNetwork,
     SessionCreateOptions,
     SessionWithToken,
     StreamHandle,
@@ -59,6 +60,7 @@
     "AsyncStreamHandle",
     "SandboxFilesystemFile",
     "CopyResponse",
+    "SandboxUpdateNetwork",
     "Sandbox",
     "SandboxFileSystem",
     "SandboxPreviews",
diff --git a/src/blaxel/core/sandbox/default/sandbox.py b/src/blaxel/core/sandbox/default/sandbox.py
index a069c67..f80a600 100644
--- a/src/blaxel/core/sandbox/default/sandbox.py
+++ b/src/blaxel/core/sandbox/default/sandbox.py
@@ -32,6 +32,7 @@
     SandboxConfiguration,
     SandboxCreateConfiguration,
     SandboxUpdateMetadata,
+    SandboxUpdateNetwork,
     SessionWithToken,
 )
 from .codegen import SandboxCodegen
@@ -477,6 +478,42 @@ async def update_lifecycle(
 
         return cls(response)
 
+    @classmethod
+    async def update_network(
+        cls, sandbox_name: str, network: SandboxUpdateNetwork
+    ) -> "SandboxInstance":
+        """Update sandbox network configuration without recreating it.
+
+        Args:
+            sandbox_name: The name of the sandbox to update
+            network: The new network configuration
+
+        Returns:
+            A new SandboxInstance with updated network configuration
+        """
+        sandbox_instance = await cls.get(sandbox_name)
+        sandbox = sandbox_instance.sandbox
+
+        updated_sandbox = Sandbox.from_dict(sandbox.to_dict())
+        if updated_sandbox.spec is None:
+            raise ValueError(f"Sandbox {sandbox_name} has invalid spec")
+
+        if network.network is not None:
+            if isinstance(network.network, dict):
+                updated_sandbox.spec.network = SandboxNetworkModel.from_dict(network.network)
+            else:
+                updated_sandbox.spec.network = network.network
+        else:
+            updated_sandbox.spec.network = UNSET
+
+        response = await update_sandbox(
+            sandbox_name=sandbox_name,
+            client=client,
+            body=updated_sandbox,
+        )
+
+        return cls(response)
+
     @classmethod
     async def create_if_not_exists(
         cls, sandbox: Union[Sandbox, SandboxCreateConfiguration, Dict[str, Any]]
diff --git a/src/blaxel/core/sandbox/sync/sandbox.py b/src/blaxel/core/sandbox/sync/sandbox.py
index 9a76f50..cf64e2a 100644
--- a/src/blaxel/core/sandbox/sync/sandbox.py
+++ b/src/blaxel/core/sandbox/sync/sandbox.py
@@ -37,6 +37,7 @@
     SandboxConfiguration,
     SandboxCreateConfiguration,
     SandboxUpdateMetadata,
+    SandboxUpdateNetwork,
     SessionWithToken,
 )
 from .codegen import SyncSandboxCodegen
@@ -392,6 +393,42 @@ def update_lifecycle(
 
         return cls(response)
 
+    @classmethod
+    def update_network(
+        cls, sandbox_name: str, network: SandboxUpdateNetwork
+    ) -> "SyncSandboxInstance":
+        """Update sandbox network configuration without recreating it.
+
+        Args:
+            sandbox_name: The name of the sandbox to update
+            network: The new network configuration
+
+        Returns:
+            A new SyncSandboxInstance with updated network configuration
+        """
+        sandbox_instance = cls.get(sandbox_name)
+        sandbox = sandbox_instance.sandbox
+
+        updated_sandbox = Sandbox.from_dict(sandbox.to_dict())
+        if updated_sandbox.spec is None:
+            raise ValueError(f"Sandbox {sandbox_name} has invalid spec")
+
+        if network.network is not None:
+            if isinstance(network.network, dict):
+                updated_sandbox.spec.network = SandboxNetworkModel.from_dict(network.network)
+            else:
+                updated_sandbox.spec.network = network.network
+        else:
+            updated_sandbox.spec.network = UNSET
+
+        response = update_sandbox(
+            sandbox_name=sandbox_name,
+            client=client,
+            body=updated_sandbox,
+        )
+
+        return cls(response)
+
     @classmethod
     def create_if_not_exists(
         cls, sandbox: Union[Sandbox, SandboxCreateConfiguration, Dict[str, Any]]
diff --git a/src/blaxel/core/sandbox/types.py b/src/blaxel/core/sandbox/types.py
index b43ed1f..22628d6 100644
--- a/src/blaxel/core/sandbox/types.py
+++ b/src/blaxel/core/sandbox/types.py
@@ -146,6 +146,16 @@ def __init__(
         self.display_name = display_name
 
 
+class SandboxUpdateNetwork:
+    """Configuration for updating sandbox network configuration."""
+
+    def __init__(
+        self,
+        network: Union[SandboxNetwork, Dict[str, Any]] | None = None,
+    ):
+        self.network = network
+
+
 class SandboxCreateConfiguration:
     """Simplified configuration for creating sandboxes with default values."""
 
diff --git a/tests/integration/core/sandbox/test_network.py b/tests/integration/core/sandbox/test_network.py
new file mode 100644
index 0000000..6a06f4e
--- /dev/null
+++ b/tests/integration/core/sandbox/test_network.py
@@ -0,0 +1,111 @@
+import pytest
+
+from blaxel.core import SandboxInstance
+from blaxel.core.sandbox.types import SandboxUpdateNetwork
+from tests.helpers import (
+    default_image,
+    default_labels,
+    unique_name,
+)
+
+# =============================================================================
+# Sandbox UpdateNetwork Tests
+# =============================================================================
+
+
+@pytest.mark.asyncio(loop_scope="class")
+class TestSandboxUpdateNetwork:
+    """Test sandbox update_network operations."""
+
+    async def test_updates_sandbox_network_with_allowed_domains(self):
+        """Test updating sandbox network with allowed domains using httpbin."""
+        name = unique_name("update-net-allow")
+        await SandboxInstance.create(
+            {
+                "name": name,
+                "image": default_image,
+                "labels": default_labels,
+            }
+        )
+
+        try:
+            updated = await SandboxInstance.update_network(
+                name,
+                SandboxUpdateNetwork(network={"allowedDomains": ["httpbin.org", "*.httpbin.org"]}),
+            )
+            assert updated.spec.network is not None
+            assert set(updated.spec.network.allowed_domains) == {"httpbin.org", "*.httpbin.org"}
+        finally:
+            await SandboxInstance.delete(name)
+
+    async def test_updates_sandbox_network_with_forbidden_domains(self):
+        """Test updating sandbox network with forbidden domains using httpbin."""
+        name = unique_name("update-net-forbid")
+        await SandboxInstance.create(
+            {
+                "name": name,
+                "image": default_image,
+                "labels": default_labels,
+            }
+        )
+
+        try:
+            updated = await SandboxInstance.update_network(
+                name,
+                SandboxUpdateNetwork(
+                    network={"forbiddenDomains": ["httpbin.org", "*.httpbin.org"]}
+                ),
+            )
+            assert updated.spec.network is not None
+            assert set(updated.spec.network.forbidden_domains) == {"httpbin.org", "*.httpbin.org"}
+        finally:
+            await SandboxInstance.delete(name)
+
+    async def test_updates_sandbox_network_with_model_object(self):
+        """Test updating sandbox network using SandboxNetwork model object."""
+        from blaxel.core.client.models import SandboxNetwork
+
+        name = unique_name("update-net-model")
+        await SandboxInstance.create(
+            {
+                "name": name,
+                "image": default_image,
+                "labels": default_labels,
+            }
+        )
+
+        try:
+            network_config = SandboxNetwork(
+                allowed_domains=["httpbin.org"],
+            )
+            updated = await SandboxInstance.update_network(
+                name,
+                SandboxUpdateNetwork(network=network_config),
+            )
+            assert updated.spec.network is not None
+            assert updated.spec.network.allowed_domains == ["httpbin.org"]
+        finally:
+            await SandboxInstance.delete(name)
+
+    async def test_clears_sandbox_network_config(self):
+        """Test clearing sandbox network configuration by passing network=None."""
+        name = unique_name("update-net-clear")
+        await SandboxInstance.create(
+            {
+                "name": name,
+                "image": default_image,
+                "network": {"allowedDomains": ["httpbin.org"]},
+                "labels": default_labels,
+            }
+        )
+
+        try:
+            updated = await SandboxInstance.update_network(
+                name,
+                SandboxUpdateNetwork(network=None),
+            )
+            from blaxel.core.client.types import UNSET
+
+            assert updated.spec.network is UNSET or updated.spec.network is None
+        finally:
+            await SandboxInstance.delete(name)