diff --git a/aoc.py b/aoc/aoc.py
similarity index 93%
rename from aoc.py
rename to aoc/aoc.py
index ec12ae2..0da2258 100644
--- a/aoc.py
+++ b/aoc/aoc.py
@@ -179,10 +179,21 @@ class AocParseLinesSameParser(Generic[T1], AocParseLines[T1, T1]):
         ...
 
 
+def run_latest() -> None:
+    days = [
+        import_module(f".{file.stem}", package="aoc")
+        for file in Path("aoc").iterdir()
+        if file.name.endswith(".py") and file.name.startswith("day")
+    ]
+    day = days[-1]
+    print(f"Running {day.__name__}")
+    day.main()
+
+
 def main() -> None:
     days = [
-        import_module(file.stem)
-        for file in Path(".").iterdir()
+        import_module(f".{file.stem}", package="aoc")
+        for file in Path("aoc").iterdir()
         if file.name.endswith(".py") and file.name.startswith("day")
     ]
     for day in days:
diff --git a/day01.py b/aoc/day01.py
similarity index 86%
rename from day01.py
rename to aoc/day01.py
index 0d1b632..a0d66d3 100644
--- a/day01.py
+++ b/aoc/day01.py
@@ -1,7 +1,11 @@
-from aoc import Aoc2, AocSameImplementation, AocParseLines
+from .aoc import Aoc2, AocSameImplementation, AocParseLines
 
 
-class Day01(AocParseLines[str, str], AocSameImplementation[list[str]], Aoc2[list[str], list[str]]):
+class Day01(
+    AocParseLines[str, str],
+    AocSameImplementation[list[str]],
+    Aoc2[list[str], list[str]],
+):
     def __init__(self) -> None:
         Aoc2.__init__(self, 2023, 1)
 
diff --git a/day02.py b/aoc/day02.py
similarity index 97%
rename from day02.py
rename to aoc/day02.py
index 3be804a..10efe41 100644
--- a/day02.py
+++ b/aoc/day02.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 from dataclasses import dataclass
 
-from aoc import Aoc2, AocParseLinesSameParser
+from .aoc import Aoc2, AocParseLinesSameParser
 
 
 @dataclass(frozen=True)
diff --git a/day03.py b/aoc/day03.py
similarity index 98%
rename from day03.py
rename to aoc/day03.py
index c72b117..3e55327 100644
--- a/day03.py
+++ b/aoc/day03.py
@@ -2,7 +2,7 @@ from collections import defaultdict
 from dataclasses import dataclass
 from functools import reduce
 from typing import Any, Optional
-from aoc import Aoc2, AocSameParser
+from .aoc import Aoc2, AocSameParser
 
 
 @dataclass
diff --git a/day04.py b/aoc/day04.py
similarity index 88%
rename from day04.py
rename to aoc/day04.py
index e19b139..02a4657 100644
--- a/day04.py
+++ b/aoc/day04.py
@@ -2,7 +2,7 @@ from __future__ import annotations
 from dataclasses import dataclass
 import regex
 
-from aoc import Aoc2, AocParseLinesSameParser
+from .aoc import Aoc2, AocParseLinesSameParser
 
 
 @dataclass
@@ -41,9 +41,7 @@ class Day04(AocParseLinesSameParser[Card], Aoc2[list[Card], list[Card]]):
     def part2(self, cards: list[Card]) -> int:
         d = [0] * len(cards)
         for card in reversed(cards):
-            d[card.card_id - 1] = 1 + sum(
-                d[card.card_id + i] for i in range(card.wins)
-            )
+            d[card.card_id - 1] = 1 + sum(d[card.card_id + i] for i in range(card.wins))
         return sum(d)
 
 
diff --git a/day05.py b/aoc/day05.py
similarity index 99%
rename from day05.py
rename to aoc/day05.py
index 12f51cf..d105c87 100644
--- a/day05.py
+++ b/aoc/day05.py
@@ -6,7 +6,7 @@ from typing import Optional
 
 import regex as re
 
-from aoc import Aoc2, AocSameParser
+from .aoc import Aoc2, AocSameParser
 
 
 class Map:
diff --git a/aoc/day06.py b/aoc/day06.py
new file mode 100644
index 0000000..091844f
--- /dev/null
+++ b/aoc/day06.py
@@ -0,0 +1,56 @@
+from dataclasses import dataclass
+from functools import reduce
+
+import re
+
+from .aoc import Aoc2, AocSameImplementation
+
+
+@dataclass
+class Race:
+    time: int
+    distance: int
+
+
+class Day06(AocSameImplementation[list[Race]], Aoc2[list[Race], list[Race]]):
+    def simulate(self, timeaccel: int, timeoverall: int) -> int:
+        racetime = timeoverall - timeaccel
+        return racetime * timeaccel
+
+    def parseinput2(self, inpt: str) -> list[Race]:
+        lines = inpt.splitlines()
+        times = int("".join(re.findall(r"\d+", lines[0])))
+        distances = int("".join(re.findall(r"\d+", lines[1])))
+
+        return [Race(times, distances)]
+
+    def parseinput1(self, inpt: str) -> list[Race]:
+        lines = inpt.splitlines()
+        times = (int(d) for d in re.findall(r"\d+", lines[0]))
+        distances = (int(d) for d in re.findall(r"\d+", lines[1]))
+
+        return [Race(*t) for t in zip(times, distances)]
+
+    def part(self, inpt: list[Race]) -> int:
+        return reduce(
+            lambda x, y: x * y,
+            [
+                len(
+                    [
+                        poss
+                        for poss in range(race.time)
+                        if self.simulate(poss, race.time) > race.distance
+                    ]
+                )
+                for race in inpt
+            ],
+        )
+
+
+def main() -> None:
+    day06 = Day06(2023, 6)
+    day06.run()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..b3a16aa
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,22 @@
+[tool.poetry]
+name = "aoc2023"
+version = "0.1.0"
+description = "Advent of Code 2023"
+authors = ["Christoph Stahl <christoph.stahl@tu-dortmund.de>"]
+readme = "README.md"
+packages = [{include = "aoc"}]
+
+[tool.poetry.dependencies]
+python = "^3.10"
+regex = "^2023.10.3"
+types-regex = "^2023.10.3.0"
+mypy = "^1.7.1"
+
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
+
+[tool.poetry.scripts]
+aoc = "aoc.aoc:main"
+latest = "aoc.aoc:run_latest"