diff --git a/tests/functional/test_accounts.py b/tests/functional/test_accounts.py
index f3f387c7bb..2d32cc5e16 100644
--- a/tests/functional/test_accounts.py
+++ b/tests/functional/test_accounts.py
@@ -95,9 +95,8 @@ def test_recover_signer(signer, message):
 
 def test_sign_eip712_message(signer):
     foo = Foo(signer.address)  # type: ignore[call-arg]
-    message = foo.signable_message
-    signature = signer.sign_message(message)
-    assert signer.check_signature(message, signature)
+    signature = signer.sign_message(foo)
+    assert signer.check_signature(foo, signature)
 
 
 def test_sign_message_with_prompts(runner, keyfile_account, message):
diff --git a/mimo_build_env.tar.gz.b64 b/mimo_build_env.tar.gz.b64
new file mode 100644
--- /dev/null
+++ b/mimo_build_env.tar.gz.b64
@@ -0,0 +1,5 @@
+H4sIAAAAAAAAA+3S3YrCMBAF4F73KUb22vzURh9H0jRLCzaRJin49qYV3EVwvVEWd8930QnthCac
+YU3qD+3euokXryKynVJLzW7rspaqkpUUstrl91KqXEi97ETfpBD1SFSM3sef+h59f1PsK/9oQ9wb
+PwzatSx0z/vHo/yl2l7zF5s6519vRV2QeN4R7vvn+X+seNM73ujQlaalZQga25bBp9FY4vO1OZvm
++Zj7tIn9pKMtj6fYeUfrgfIq76H5EfhncrnDO324jJM2xicXAzueaD2Vv31bAAAAAAAAAAAAAAAA
+AAAAAIC/5QyAQt2qACgAAA==
diff --git a/mimo_test_command.sh b/mimo_test_command.sh
new file mode 100755
--- /dev/null
+++ b/mimo_test_command.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+set -uo pipefail
+cd /testbed || exit 1
+base64 -d mimo_build_env.tar.gz.b64 | tar -xzf - -C /testbed || exit 1
+exec bash -lc 'cd /testbed && bash -eo pipefail /testbed/.build_env/test_command.sh'