diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c2e3608..1bd4607 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -14,34 +14,34 @@ jobs:
   archives:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: jpetrucciani/archives-check@main
         with:
           path: 'gamble/'
   mypy:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: jpetrucciani/mypy-check@master
   black:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: jpetrucciani/black-check@master
   ruff:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: jpetrucciani/ruff-check@main
   tests:
     runs-on: ubuntu-22.04
     needs: [archives, mypy, black, ruff]
     strategy:
       matrix:
-        python-version: ['3.10', '3.11']
+        python-version: ['3.10', '3.11', '3.12']
     name: python ${{ matrix.python-version }} tests
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: setup python
         uses: actions/setup-python@v3
         with:
diff --git a/default.nix b/default.nix
index 294382c..5d45358 100644
--- a/default.nix
+++ b/default.nix
@@ -1,8 +1,8 @@
 { pkgs ? import
     (fetchTarball {
-      name = "jpetrucciani-2023-06-26";
-      url = "https://github.com/jpetrucciani/nix/archive/cfbb79b2245dcc3d06f6bd80892d346363a8b9e5.tar.gz";
-      sha256 = "15wa55yhmv3hfsx29zabg6q5sqy9y3xrxy7w0dlrzfpkpy6xk56n";
+      name = "jpetrucciani-2023-10-17";
+      url = "https://github.com/jpetrucciani/nix/archive/d944b2ed0e17f5e8e12332d21d226038ccb77ccb.tar.gz";
+      sha256 = "0dzcqs7614pd0z0n17d3y6n6w1snk0x54pj8m740w4657i538g7s";
     })
     { }
 }:
diff --git a/gamble/models/dice.py b/gamble/models/dice.py
index bdf0005..7973591 100644
--- a/gamble/models/dice.py
+++ b/gamble/models/dice.py
@@ -256,7 +256,7 @@ def roll_many(self, num_rolls: int = 2) -> list[int]:
         @arg num_rolls: the number of times to roll the dice
         @ret list of values rolled by these dice
         """
-        return [self.roll() for _ in range(0, num_rolls)]
+        return [self.roll() for _ in range(num_rolls)]
 
     def max_of(self, num_rolls: int = 2) -> tuple[int, list[int]]:
         """
diff --git a/pyproject.toml b/pyproject.toml
index f76195d..a40f7c3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,6 +13,7 @@ classifiers=[
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",
     "License :: OSI Approved :: MIT License",
@@ -34,7 +35,7 @@ target-version = ["py311"]
 line-length = 100
 select = ["A", "ANN", "ARG", "B", "C4", "D", "E", "F", "ICN", "ISC", "N", "PD", "PGH", "PLR", "PLW", "PIE", "PT", "Q", "RET", "RUF", "S", "SIM", "TID", "UP", "W", "YTT"]
 ignore = ["A001", "A003", "ANN101", "ANN102", "ANN401", "B008", "B019", "C405", "D200", "D203", "D205", "D212", "D400", "D403", "D404", "D415", "E501", "N818", "PGH003", "PGH004", "PLR2004", "PT012", "S101", "S105", "S108", "S311", "W605"]
-target-version = "py310"
+target-version = "py311"
 exclude = [
     ".direnv",
     ".git",
diff --git a/tox.ini b/tox.ini
index e01eb2b..df54543 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py39,py310,py311
+envlist = py310,py311,py312
 
 [testenv]
 deps =