diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5dc6f48..7b692b5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,10 @@
 # Change Log
 
-## Unreleased
+## 2.1.0
 
 ### Added
 
+* Added Tinyman V2 (Mainnet) support.
 * Added `client_name` attribute to `TinymanClient` classes. [#51](https://github.com/tinymanorg/tinyman-py-sdk/pull/51)
 * Added note to application call transactions. The note (`tinyman/<v1|v2>:j{"origin":"<client-name>"}`) follows [Algorand Transaction Note Field Conventions ARC-2](https://github.com/algorandfoundation/ARCs/blob/main/ARCs/arc-0002.md). [#51](https://github.com/tinymanorg/tinyman-py-sdk/pull/51)
 * Added `version` property and `generate_app_call_note` method to `TinymanClient` classes. [#51](https://github.com/tinymanorg/tinyman-py-sdk/pull/51)
@@ -17,7 +18,7 @@
 
 ### Added
 
-* Added Tinyman V2 support (`tinyman.v2`).
+* Added Tinyman V2 (Testnet) support (`tinyman.v2`).
 * Added Staking support (`tinyman.staking`).
   - It allows creating commitment transaction by `prepare_commit_transaction` and tracking commitments by `parse_commit_transaction`.
 * Added `calculate_price_impact` function to `tinyman.utils`.
diff --git a/README.md b/README.md
index b7125fa..1ddea3d 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ The SDK supports Tinyman V2 and V1.1.
 
 ## Requirements
 - Python 3.8+
-- py-algorand-sdk 1.10.0+
+- py-algorand-sdk 1.10.0+, <2.0.0
 
 ## Installation
 tinyman-py-sdk is not released on PYPI. It can be installed directly from this repository with pip:
diff --git a/setup.py b/setup.py
index 78897a0..f063b5a 100644
--- a/setup.py
+++ b/setup.py
@@ -9,14 +9,14 @@
     description="Tinyman Python SDK",
     author="Tinyman",
     author_email="hello@tinyman.org",
-    version="2.0.0",
+    version="2.1.0",
     long_description=long_description,
     long_description_content_type="text/markdown",
     license="MIT",
     project_urls={
         "Source": "https://github.com/tinyman/tinyman-py-sdk",
     },
-    install_requires=["py-algorand-sdk >= 1.10.0"],
+    install_requires=["py-algorand-sdk >= 1.10.0, <2.0.0"],
     packages=setuptools.find_packages(),
     python_requires=">=3.8",
     package_data={"tinyman.v1": ["asc.json"], "tinyman.v2": ["amm_approval.map.json"]},
diff --git a/tinyman/v2/constants.py b/tinyman/v2/constants.py
index 3d84002..3b43d33 100644
--- a/tinyman/v2/constants.py
+++ b/tinyman/v2/constants.py
@@ -28,10 +28,10 @@
 
 
 TESTNET_VALIDATOR_APP_ID_V2 = 148607000
-MAINNET_VALIDATOR_APP_ID_V2 = None
+MAINNET_VALIDATOR_APP_ID_V2 = 1002541853
 
 TESTNET_VALIDATOR_APP_ID = TESTNET_VALIDATOR_APP_ID_V2
-MAINNET_VALIDATOR_APP_ID = None
+MAINNET_VALIDATOR_APP_ID = MAINNET_VALIDATOR_APP_ID_V2
 
 TESTNET_VALIDATOR_APP_ADDRESS = get_application_address(TESTNET_VALIDATOR_APP_ID)
 # MAINNET_VALIDATOR_APP_ADDRESS = get_application_address(MAINNET_VALIDATOR_APP_ID)