diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
new file mode 100644
index 0000000..7d9752c
--- /dev/null
+++ b/.github/workflows/lint.yml
@@ -0,0 +1,42 @@
+name: Linting - Python
+
+on: [push]
+
+jobs:
+  lint:
+    name: Linting - Python ${{ matrix.python_version }}
+    strategy:
+      fail-fast: false
+      matrix:
+        python_version: ["3.11"]
+    runs-on: ubuntu-latest
+
+    defaults:
+      run:
+        shell: bash
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 1
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python_version }}
+          architecture: x64
+
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+        with:
+          virtualenvs-create: true
+          virtualenvs-in-project: true
+
+      - name: Install Dependencies
+        run: poetry install
+
+      - name: Run yapf
+        run: poetry run yapf -r -d themida_unmutate
+
+      - name: Run mypy
+        run: poetry run mypy --strict themida_unmutate
diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 0000000..ef3a2f9
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,316 @@
+# This file is automatically @generated by Poetry 1.5.1 and should not be changed by hand.
+
+[[package]]
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+optional = false
+python-versions = ">=3.8.0"
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+
+[[package]]
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+files = [
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+    {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
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+description = "serialize all of Python"
+optional = false
+python-versions = ">=3.7"
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+[[package]]
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+description = "Clean single-source support for Python 3 and 2"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+files = [
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+[[package]]
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+description = "Read metadata from Python packages"
+optional = false
+python-versions = ">=3.8"
+files = [
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+description = "A lil' TOML parser"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "tomli-2.0.1-py3-none-any.whl", hash = "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc"},
+    {file = "tomli-2.0.1.tar.gz", hash = "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"},
+]
+
+[[package]]
+name = "tomlkit"
+version = "0.12.3"
+description = "Style preserving TOML library"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "tomlkit-0.12.3-py3-none-any.whl", hash = "sha256:b0a645a9156dc7cb5d3a1f0d4bab66db287fcb8e0430bdd4664a095ea16414ba"},
+    {file = "tomlkit-0.12.3.tar.gz", hash = "sha256:75baf5012d06501f07bee5bf8e801b9f343e7aac5a92581f20f80ce632e6b5a4"},
+]
+
+[[package]]
+name = "typing-extensions"
+version = "4.9.0"
+description = "Backported and Experimental Type Hints for Python 3.8+"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "typing_extensions-4.9.0-py3-none-any.whl", hash = "sha256:af72aea155e91adfc61c3ae9e0e342dbc0cba726d6cba4b6c72c1f34e47291cd"},
+    {file = "typing_extensions-4.9.0.tar.gz", hash = "sha256:23478f88c37f27d76ac8aee6c905017a143b0b1b886c3c9f66bc2fd94f9f5783"},
+]
+
+[[package]]
+name = "yapf"
+version = "0.40.2"
+description = "A formatter for Python code"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "yapf-0.40.2-py3-none-any.whl", hash = "sha256:adc8b5dd02c0143108878c499284205adb258aad6db6634e5b869e7ee2bd548b"},
+    {file = "yapf-0.40.2.tar.gz", hash = "sha256:4dab8a5ed7134e26d57c1647c7483afb3f136878b579062b786c9ba16b94637b"},
+]
+
+[package.dependencies]
+importlib-metadata = ">=6.6.0"
+platformdirs = ">=3.5.1"
+tomli = ">=2.0.1"
+
+[[package]]
+name = "zipp"
+version = "3.17.0"
+description = "Backport of pathlib-compatible object wrapper for zip files"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "zipp-3.17.0-py3-none-any.whl", hash = "sha256:0e923e726174922dce09c53c59ad483ff7bbb8e572e00c7f7c46b88556409f31"},
+    {file = "zipp-3.17.0.tar.gz", hash = "sha256:84e64a1c28cf7e91ed2078bb8cc8c259cb19b76942096c8d7b84947690cabaf0"},
+]
+
+[package.extras]
+docs = ["furo", "jaraco.packaging (>=9.3)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (<7.2.5)", "sphinx (>=3.5)", "sphinx-lint"]
+testing = ["big-O", "jaraco.functools", "jaraco.itertools", "more-itertools", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=2.2)", "pytest-ignore-flaky", "pytest-mypy (>=0.9.1)", "pytest-ruff"]
+
+[metadata]
+lock-version = "2.0"
+python-versions = "^3.11"
+content-hash = "5c0f399d9c14a541eb062aac678a6677601b2a7348bd6ad3a8dc299dec598839"
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..9d41906
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,40 @@
+[tool.poetry]
+name = "themida-unmutate"
+version = "0.1.0"
+description = "Static deobfuscator for Themida's mutation-based obfuscation."
+authors = ["ergrelet <ergrelet@users.noreply.github.com>"]
+license = "GPL-3.0-or-later"
+readme = "README.md"
+packages = [{include = "themida_unmutate"}]
+
+[tool.poetry.dependencies]
+python = "^3.11"
+lief = "^0.13.2"
+miasm = "^0.1.5"
+
+
+[tool.poetry.group.dev.dependencies]
+yapf = "^0.40.2"
+mypy = "^1.8.0"
+pylint = "^3.0.3"
+
+[tool.poetry.scripts]
+themida-unmutate = 'themida_unmutate.symexec:main'
+
+[tool.mypy]
+python_version = "3.11"
+warn_return_any = true
+warn_unused_configs = true
+no_implicit_optional = true
+ignore_missing_imports = true
+
+[tool.pylint.'MESSAGES CONTROL']
+max-line-length = 120
+disable = "C0114, C0115, C0116, I1101"
+
+[tool.pylint.TYPECHECK]
+ignored-classes = "lief"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
diff --git a/themida-unmutate/__init__.py b/themida_unmutate/__init__.py
similarity index 100%
rename from themida-unmutate/__init__.py
rename to themida_unmutate/__init__.py
diff --git a/themida-unmutate/__main__.py b/themida_unmutate/__main__.py
similarity index 100%
rename from themida-unmutate/__main__.py
rename to themida_unmutate/__main__.py
diff --git a/themida-unmutate/miasm_utils.py b/themida_unmutate/miasm_utils.py
similarity index 72%
rename from themida-unmutate/miasm_utils.py
rename to themida_unmutate/miasm_utils.py
index fca4d8e..0586eb2 100644
--- a/themida-unmutate/miasm_utils.py
+++ b/themida_unmutate/miasm_utils.py
@@ -1,4 +1,4 @@
-import miasm.expression.expression as m2_expr
+import miasm.expression.expression as m2_expr  # type: ignore
 
 
 def expr_int_to_int(expr: m2_expr.ExprInt) -> int:
@@ -9,4 +9,4 @@ def expr_int_to_int(expr: m2_expr.ExprInt) -> int:
     else:
         result = expr.arg
 
-    return result
+    return int(result)
diff --git a/themida-unmutate/symexec.py b/themida_unmutate/symexec.py
similarity index 97%
rename from themida-unmutate/symexec.py
rename to themida_unmutate/symexec.py
index 28cd315..49661f9 100644
--- a/themida-unmutate/symexec.py
+++ b/themida_unmutate/symexec.py
@@ -62,7 +62,8 @@ def main() -> None:
     print(f"Mutated code is at 0x{mutated_code_addr:x}")
 
     loc_db = LocationDB()
-    cont = Container.from_stream(open(args.target, 'rb'), loc_db)
+    with open(args.target, 'rb') as target_bin:
+        cont = Container.from_stream(target_bin, loc_db)
     machine = Machine(args.architecture if args.architecture else cont.arch)
     assert machine.dis_engine is not None
 
@@ -423,7 +424,7 @@ def handle_add_operation(mdis: disasmEngine, dst: m2_expr.Expr,
                 print(original_instr)
                 return original_instr
             # DST = DST[0:XX] + (-RHS)
-            elif is_a_slice_of(lhs, dst):
+            if is_a_slice_of(lhs, dst):
                 dst = m2_expr.ExprSlice(dst, lhs.start, lhs.stop)
                 original_instr_str = f"SUB {ir_to_asm_str(dst)}, {ir_to_asm_str(rhs.arg[0])}"
                 original_instr = mdis.arch.fromstring(original_instr_str,
@@ -442,7 +443,7 @@ def handle_add_operation(mdis: disasmEngine, dst: m2_expr.Expr,
                 print(original_instr)
                 return original_instr
             # DST = (-LHS) + DST[0:XX]
-            elif is_a_slice_of(rhs, dst):
+            if is_a_slice_of(rhs, dst):
                 dst = m2_expr.ExprSlice(dst, rhs.start, rhs.stop)
                 original_instr_str = f"SUB {ir_to_asm_str(dst)}, {ir_to_asm_str(lhs.arg[0])}"
                 original_instr = mdis.arch.fromstring(original_instr_str,
@@ -474,14 +475,14 @@ def handle_binary_operation(mdis: disasmEngine, dst: m2_expr.Expr,
             print(original_instr)
             return original_instr
         # DST = OP(LHS, DST)
-        elif dst == rhs:
+        if dst == rhs:
             original_instr_str = f"{op_asm_str} {ir_to_asm_str(dst)}, {ir_to_asm_str(lhs)}"
             original_instr = mdis.arch.fromstring(original_instr_str,
                                                   mdis.loc_db, mdis.attrib)
             print(original_instr)
             return original_instr
         # DST = OP(DST[0:XX], RHS)
-        elif is_a_slice_of(lhs, dst):
+        if is_a_slice_of(lhs, dst):
             dst = m2_expr.ExprSlice(dst, lhs.start, lhs.stop)
             original_instr_str = f"{op_asm_str} {ir_to_asm_str(dst)}, {ir_to_asm_str(rhs)}"
             original_instr = mdis.arch.fromstring(original_instr_str,
@@ -489,7 +490,7 @@ def handle_binary_operation(mdis: disasmEngine, dst: m2_expr.Expr,
             print(original_instr)
             return original_instr
         # DST = OP(LHS, DST[0:XX])
-        elif is_a_slice_of(rhs, dst):
+        if is_a_slice_of(rhs, dst):
             dst = m2_expr.ExprSlice(dst, rhs.start, rhs.stop)
             original_instr_str = f"{op_asm_str} {ir_to_asm_str(dst)}, {ir_to_asm_str(lhs)}"
             original_instr = mdis.arch.fromstring(original_instr_str,
@@ -653,16 +654,16 @@ def mem_ir_to_asm_str(mem_expr: m2_expr.ExprMem) -> str:
             mem_prefix = x86_arch.SIZE2MEMPREFIX[mem_expr.size]
             return f"{mem_prefix} PTR [{mem_expr.ptr}]"
         case _:
-            raise Exception("Invalid ExprMem size")
+            raise ValueError("Invalid ExprMem size")
 
 
 def slice_ir_to_asm_str(slice_expr: m2_expr.ExprSlice) -> str:
     match type(slice_expr.arg):
         case m2_expr.ExprId:
             # Slice of a register
-            return AMD64_SLICES_MAPPING[slice_expr]
+            return str(AMD64_SLICES_MAPPING[slice_expr])
         case _:
-            return str(expr)
+            return str(slice_expr)
 
 
 def normalize_ir_assigment(
@@ -726,7 +727,7 @@ def normalize_ir_assigment(
 
 
 def is_a_slice_of(slice_expr: m2_expr.Expr, expr: m2_expr.Expr) -> bool:
-    return slice_expr.is_slice() and slice_expr.arg == expr
+    return bool(slice_expr.is_slice()) and slice_expr.arg == expr
 
 
 # Fix RIP relative instructions to make them relocatable
@@ -737,12 +738,12 @@ def fix_rip_relative_instruction(asmcfg: AsmCFG,
     # for more information on what the '_' symbol is used for.
     new_next_addr_card = m2_expr.ExprLoc(
         asmcfg.loc_db.get_or_create_name_location('_'), AMD64_PTR_SIZE)
-    for i in range(len(instr.args)):
-        if rip in instr.args[i]:
+    for i, arg in enumerate(instr.args):
+        if rip in arg:
             next_instr_addr = m2_expr.ExprInt(instr.offset + instr.l,
                                               AMD64_PTR_SIZE)
             fix_dict = {rip: rip + next_instr_addr - new_next_addr_card}
-            instr.args[i] = instr.args[i].replace_expr(fix_dict)
+            instr.args[i] = arg.replace_expr(fix_dict)
 
     return instr
 
@@ -751,10 +752,11 @@ def section_from_virtual_address(lief_bin: lief.Binary,
                                  virtual_addr: int) -> Optional[lief.Section]:
     for s in lief_bin.sections:
         if s.virtual_address <= virtual_addr < s.virtual_address + s.size:
+            assert isinstance(s, lief.Section)
             return s
 
     return None
 
 
 if __name__ == "__main__":
-    main()
\ No newline at end of file
+    main()
diff --git a/themida-unmutate/unwrapping.py b/themida_unmutate/unwrapping.py
similarity index 93%
rename from themida-unmutate/unwrapping.py
rename to themida_unmutate/unwrapping.py
index 8e7de8d..c6d2162 100644
--- a/themida-unmutate/unwrapping.py
+++ b/themida_unmutate/unwrapping.py
@@ -8,10 +8,11 @@
 from .miasm_utils import expr_int_to_int
 
 
-def unwrap_function(target_bin: str, target_arch: str,
+def unwrap_function(target_bin_path: str, target_arch: str,
                     target_addr: int) -> int:
     loc_db = LocationDB()
-    cont = Container.from_stream(open(target_bin, 'rb'), loc_db)
+    with open(target_bin_path, 'rb') as target_bin:
+        cont = Container.from_stream(target_bin, loc_db)
     machine = Machine(target_arch if target_arch else cont.arch)
     assert machine.dis_engine is not None