diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 13b11e6a..fc7358a1 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -24,6 +24,19 @@ repos:
       - id: isort
         # profile and line-length to avoid clashes with black
         args: ["--profile=black", "--line-length=88"]
+  - repo: https://github.com/pre-commit/mirrors-mypy
+    rev: v1.8.0
+    hooks:
+      - id: mypy
+        pass_filenames: false
+        args:
+          - --install-types
+          - --non-interactive
+          - --follow-imports=silent
+          - --ignore-missing-imports
+          - --implicit-optional
+          - --package
+          - boa
 
 default_language_version:
   python: python3.10
diff --git a/Makefile b/Makefile
index f8835335..1235e12e 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,6 @@ all: lint build
 
 lint:
 	pre-commit run --all-files
-	mypy --install-types --non-interactive --follow-imports=silent --ignore-missing-imports --implicit-optional -p boa
 
 build:
 	pip install .
diff --git a/boa/contracts/vyper/vyper_contract.py b/boa/contracts/vyper/vyper_contract.py
index 5faa9f82..5ef18264 100644
--- a/boa/contracts/vyper/vyper_contract.py
+++ b/boa/contracts/vyper/vyper_contract.py
@@ -446,14 +446,14 @@ def __repr__(self):
 class VyperContract(_BaseVyperContract):
     def __init__(
         self,
-        compiler_data,
+        compiler_data: CompilerData,
         *args,
-        env=None,
-        override_address=None,
+        env: Env = None,
+        override_address: Address = None,
         # whether to skip constructor
         skip_initcode=False,
-        created_from=None,
-        filename=None,
+        created_from: Address = None,
+        filename: str = None,
     ):
         super().__init__(compiler_data, env, filename)
 
@@ -475,7 +475,7 @@ def __init__(
             addr = Address(override_address)
         else:
             addr = self._run_init(*args, override_address=override_address)
-        self._address: Address = addr
+        self._address = addr
 
         for fn_name, fn in external_fns.items():
             setattr(self, fn_name, VyperFunction(fn, self))
diff --git a/boa/environment.py b/boa/environment.py
index c544e76c..230168e1 100644
--- a/boa/environment.py
+++ b/boa/environment.py
@@ -6,7 +6,7 @@
 import random
 import sys
 import warnings
-from typing import Any, Iterator, Optional, Tuple
+from typing import Any, Iterator, Optional, Tuple, TypeAlias
 
 import eth.constants as constants
 import eth.tools.builder.chain as chain
@@ -96,7 +96,7 @@ def anchor(self):
 
 
 # make mypy happy
-_AddressType = Address | str | bytes | PYEVM_Address
+_AddressType: TypeAlias = Address | str | bytes | PYEVM_Address
 
 
 _opcode_overrides = {}
diff --git a/boa/network.py b/boa/network.py
index f9e60f1c..ddcbc2e8 100644
--- a/boa/network.py
+++ b/boa/network.py
@@ -4,7 +4,6 @@
 from dataclasses import dataclass
 from functools import cached_property
 from math import ceil
-from typing import Any
 
 from eth_account import Account
 from requests.exceptions import HTTPError
@@ -189,9 +188,9 @@ def get_eip1559_fee(self) -> tuple[str, str, str, str]:
         max_fee = to_hex(base_fee_estimate + to_int(max_priority_fee))
         return to_hex(base_fee_estimate), max_priority_fee, max_fee, chain_id
 
-    def get_static_fee(self) -> list[Any]:
+    def get_static_fee(self) -> tuple[str, str]:
         # non eip-1559 transaction
-        return self._rpc.fetch_multi([("eth_gasPrice", []), ("eth_chainId", [])])
+        return tuple(self._rpc.fetch_multi([("eth_gasPrice", []), ("eth_chainId", [])]))
 
     def _check_sender(self, address):
         if address is None:
diff --git a/boa/rpc.py b/boa/rpc.py
index c52da6fc..749f95b2 100644
--- a/boa/rpc.py
+++ b/boa/rpc.py
@@ -47,9 +47,9 @@ def to_bytes(hex_str: str) -> bytes:
 
 
 class RPCError(Exception):
-    def __init__(self, message, code):
+    def __init__(self, message: str, code: int):
         super().__init__(f"{code}: {message}")
-        self.code: str = code
+        self.code = code
 
     @classmethod
     def from_json(cls, data):