diff --git a/README.md b/README.md
index 518ec86..3e3df14 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ allium auth setup --method x402_key --private-key 0x... --network eip155:8453
 allium auth setup --method x402_privy \
     --privy-app-id ... --privy-app-secret ... \
     --privy-wallet-id ... --network eip155:8453
-allium auth setup --method tempo --private-key 0x... --chain-id 42431
+allium auth setup --method tempo --private-key 0x... --chain-id 4217
 ```
 
 | Method | Description |
@@ -227,7 +227,7 @@ allium auth setup
 
 # Non-interactive setup (for scripts/CI)
 allium auth setup --method api_key --api-key sk-...
-allium auth setup --method tempo --private-key 0x... --chain-id 42431
+allium auth setup --method tempo --private-key 0x... --chain-id 4217
 
 # List all configured profiles
 allium auth list
diff --git a/cli/commands/auth.py b/cli/commands/auth.py
index 68d93bf..ff31355 100644
--- a/cli/commands/auth.py
+++ b/cli/commands/auth.py
@@ -220,7 +220,7 @@ def _build_profile_from_args(
 @click.option(
     "--chain-id",
     default=None,
-    help="Tempo chain ID, e.g. 42431 (for tempo).",
+    help="Tempo chain ID, e.g. 4217 (for tempo).",
 )
 @click.option("--privy-app-id", default=None, help="Privy App ID (for x402_privy).")
 @click.option(
@@ -253,7 +253,7 @@ def auth_setup(
     \b
       allium auth setup
       allium auth setup --method api_key --api-key sk-...
-      allium auth setup --method tempo --private-key 0x... --chain-id 42431
+      allium auth setup --method tempo --private-key 0x... --chain-id 4217
     """
     if method:
         profile = _build_profile_from_args(
diff --git a/cli/types/enums.py b/cli/types/enums.py
index adeb2b7..031c354 100644
--- a/cli/types/enums.py
+++ b/cli/types/enums.py
@@ -12,7 +12,6 @@ class AuthMethod(StrEnum):
 
 class TargetNetwork(StrEnum):
     BASE_MAINNET = "eip155:8453"
-    BASE_SEPOLIA = "eip155:84532"
 
     @property
     def label(self) -> str:
@@ -21,13 +20,11 @@ def label(self) -> str:
 
 _NETWORK_LABELS: dict[TargetNetwork, str] = {
     TargetNetwork.BASE_MAINNET: "Base Mainnet",
-    TargetNetwork.BASE_SEPOLIA: "Base Sepolia (Testnet)",
 }
 
 
 class TempoChainId(StrEnum):
     MAINNET = "4217"
-    TESTNET = "42431"
 
     @property
     def label(self) -> str:
@@ -36,7 +33,6 @@ def label(self) -> str:
 
 _TEMPO_LABELS: dict[TempoChainId, str] = {
     TempoChainId.MAINNET: "Tempo Mainnet",
-    TempoChainId.TESTNET: "Tempo Testnet",
 }
 
 
diff --git a/cli/types/labels.py b/cli/types/labels.py
index 05e2aa6..187139c 100644
--- a/cli/types/labels.py
+++ b/cli/types/labels.py
@@ -2,9 +2,7 @@
 
 ALL_NETWORK_LABELS: dict[str, str] = {
     "eip155:8453": "Base Mainnet",
-    "eip155:84532": "Base Sepolia (Testnet)",
     "4217": "Tempo Mainnet",
-    "42431": "Tempo Testnet",
 }
 
 METHOD_LABELS: dict[str, str] = {
diff --git a/release.sh b/release.sh
index 22fcf88..fc1e808 100755
--- a/release.sh
+++ b/release.sh
@@ -13,6 +13,6 @@ fi
 
 git pull origin main --ff-only
 
-cz bump
+uv run cz bump
 
 git push origin main --tags
diff --git a/tests/test_config.py b/tests/test_config.py
index f411f34..68c4ba7 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -93,7 +93,7 @@ def test_multiple_profile_types(self, mgr):
         mgr.add_profile("key", ApiKeyProfile(api_key="sk-1"))
         mgr.add_profile(
             "tempo",
-            TempoProfile(private_key="0xabc", chain_id=TempoChainId.TESTNET),
+            TempoProfile(private_key="0xabc", chain_id=TempoChainId.MAINNET),
         )
         profiles = mgr.list_profiles()
         assert isinstance(profiles["key"], ApiKeyProfile)
diff --git a/tests/test_cost_log.py b/tests/test_cost_log.py
index 152d63a..ca9aae1 100644
--- a/tests/test_cost_log.py
+++ b/tests/test_cost_log.py
@@ -54,7 +54,7 @@ def test_multiple_entries(self, log):
             log.log_payment(
                 method="tempo",
                 endpoint=f"/api/v1/test/{i}",
-                network="42431",
+                network="4217",
                 raw_amount=str(100000 * (i + 1)),
                 token="tempo",
                 wallet="tempo-account",
@@ -103,7 +103,7 @@ def test_groups_by_method_and_network(self, log):
         log.log_payment(
             method="tempo",
             endpoint="/c",
-            network="42431",
+            network="4217",
             raw_amount="500000",
             token="tempo",
             wallet="tempo",
@@ -112,7 +112,7 @@ def test_groups_by_method_and_network(self, log):
         totals = log.total()
         assert totals["x402:eip155:8453"]["calls"] == 2
         assert totals["x402:eip155:8453"]["amount"] == Decimal("3.000000")
-        assert totals["tempo:42431"]["calls"] == 1
+        assert totals["tempo:4217"]["calls"] == 1
 
     def test_empty_log(self, log):
         assert log.total() == {}
diff --git a/tests/test_models.py b/tests/test_models.py
index 2726eba..c97268e 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -31,9 +31,9 @@ def test_x402_key_roundtrip(self):
         assert p.target_network == TargetNetwork.BASE_MAINNET
 
     def test_tempo_roundtrip(self):
-        p = TempoProfile(private_key="0xabc", chain_id=TempoChainId.TESTNET)
+        p = TempoProfile(private_key="0xabc", chain_id=TempoChainId.MAINNET)
         assert p.method == "tempo"
-        assert p.chain_id == TempoChainId.TESTNET
+        assert p.chain_id == TempoChainId.MAINNET
 
     def test_discriminated_union_from_dict(self):
         config = AlliumConfig.model_validate(
@@ -91,11 +91,9 @@ def test_auth_method_values(self):
 
     def test_target_network_label(self):
         assert TargetNetwork.BASE_MAINNET.label == "Base Mainnet"
-        assert TargetNetwork.BASE_SEPOLIA.label == "Base Sepolia (Testnet)"
 
     def test_tempo_chain_id_label(self):
         assert TempoChainId.MAINNET.label == "Tempo Mainnet"
-        assert TempoChainId.TESTNET.label == "Tempo Testnet"
 
 
 class TestGetTempoConfig:
@@ -114,28 +112,13 @@ def test_mainnet_resolves_rpc_url(self):
         assert chain_id == 4217
         assert rpc_url == CHAIN_RPC_URLS[4217]
 
-    def test_testnet_resolves_rpc_url(self):
-        from unittest.mock import patch
-
-        from mpp.methods.tempo._defaults import CHAIN_RPC_URLS
-
-        from cli.auth.tempo import TempoAccount, _get_tempo_config
-
-        profile = TempoProfile(
-            private_key="0x" + "ab" * 32, chain_id=TempoChainId.TESTNET
-        )
-        with patch.object(TempoAccount, "from_key", return_value=None):
-            _, rpc_url, chain_id = _get_tempo_config(profile)
-        assert chain_id == 42431
-        assert rpc_url == CHAIN_RPC_URLS[42431]
-
     def test_unsupported_chain_id_raises(self):
         from unittest.mock import patch
 
         from cli.auth.tempo import _get_tempo_config
 
         profile = TempoProfile(
-            private_key="0x" + "ab" * 32, chain_id=TempoChainId.TESTNET
+            private_key="0x" + "ab" * 32, chain_id=TempoChainId.MAINNET
         )
         with patch.object(profile, "chain_id", "99999"):
             with pytest.raises(ValueError, match="Unsupported Tempo chain ID: 99999"):
diff --git a/uv.lock b/uv.lock
index 77f892c..fb19041 100644
--- a/uv.lock
+++ b/uv.lock
@@ -111,7 +111,7 @@ wheels = [
 
 [[package]]
 name = "allium-cli"
-version = "0.2.0"
+version = "0.2.1"
 source = { editable = "." }
 dependencies = [
     { name = "click" },