diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index 93e43f69..988c681f 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -34,7 +34,7 @@ jobs:
             --silent --output /usr/local/bin/zkvyper && \
             chmod +x /usr/local/bin/zkvyper && \
             zkvyper --version
-          curl --location https://github.com/matter-labs/era-test-node/releases/download/v0.1.0-alpha.21/era_test_node-v0.1.0-alpha.21-x86_64-unknown-linux-gnu.tar.gz \
+          curl --location https://github.com/matter-labs/era-test-node/releases/download/v0.1.0-alpha.22/era_test_node-v0.1.0-alpha.22-x86_64-unknown-linux-gnu.tar.gz \
             --silent --output era_test_node.tar.gz && \
             tar --extract --file=era_test_node.tar.gz && \
             mv era_test_node /usr/local/bin/era_test_node && \
diff --git a/tests/unitary/pool/token/conftest.py b/tests/unitary/pool/token/conftest.py
index f4149cb2..d204b380 100644
--- a/tests/unitary/pool/token/conftest.py
+++ b/tests/unitary/pool/token/conftest.py
@@ -3,11 +3,7 @@
 import boa
 import pytest
 from eth_account import Account as EthAccount
-from eth_account._utils.structured_data.hashing import (
-    hash_domain,
-    hash_message,
-)
-from eth_account.messages import SignableMessage
+from eth_account.messages import encode_typed_data
 from hexbytes import HexBytes
 
 
@@ -50,9 +46,7 @@ def _sign_permit(swap, owner, spender, value, deadline):
             nonce=swap.nonces(owner.address),
             deadline=deadline,
         )
-        signable_message = SignableMessage(
-            b"\x01", hash_domain(struct), hash_message(struct)
-        )
+        signable_message = encode_typed_data(full_message=struct)
         return EthAccount.sign_message(signable_message, owner._private_key)
 
     return _sign_permit