diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 3f471a6..22577dc 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -54,7 +54,7 @@ jobs:
             uses: actions/cache@v4
             with:
                 path: .venv
-                key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}
+                key: venv-${{ runner.os }}-${{ matrix.python }}-${{ hashFiles('**/poetry.lock') }}
         -   name: Install dependencies
             if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
             run: poetry install --no-interaction --no-root
diff --git a/poetry.lock b/poetry.lock
index 281fd92..8ce2a26 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
 
 [[package]]
 name = "accessible-pygments"
@@ -912,6 +912,9 @@ files = [
     {file = "coverage-7.5.4.tar.gz", hash = "sha256:a44963520b069e12789d0faea4e9fdb1e410cdc4aab89d94f7f55cbb7fef0353"},
 ]
 
+[package.dependencies]
+tomli = {version = "*", optional = true, markers = "python_full_version <= \"3.11.0a6\" and extra == \"toml\""}
+
 [package.extras]
 toml = ["tomli"]
 
@@ -4767,6 +4770,29 @@ type = "legacy"
 url = "https://pypi.org/simple"
 reference = "pypi-public"
 
+[[package]]
+name = "pytest-cov"
+version = "5.0.0"
+description = "Pytest plugin for measuring coverage."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "pytest-cov-5.0.0.tar.gz", hash = "sha256:5837b58e9f6ebd335b0f8060eecce69b662415b16dc503883a02f45dfeb14857"},
+    {file = "pytest_cov-5.0.0-py3-none-any.whl", hash = "sha256:4f0764a1219df53214206bf1feea4633c3b558a2925c8b59f144f682861ce652"},
+]
+
+[package.dependencies]
+coverage = {version = ">=5.2.1", extras = ["toml"]}
+pytest = ">=4.6"
+
+[package.extras]
+testing = ["fields", "hunter", "process-tests", "pytest-xdist", "virtualenv"]
+
+[package.source]
+type = "legacy"
+url = "https://pypi.org/simple"
+reference = "pypi-public"
+
 [[package]]
 name = "pytest-timeout"
 version = "2.3.1"
@@ -6849,4 +6875,4 @@ reference = "pypi-public"
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9"
-content-hash = "54aa0ed32091b362cf6a80a71e5f00e19e36843da7d1af53e87129f2fd1cc64a"
+content-hash = "06bc5029968b88d7fe502b3b58f86448d969f7818b62b50d159ab24206bc7d66"
diff --git a/pyproject.toml b/pyproject.toml
index 107774a..09638c6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -61,6 +61,7 @@ pytest = "^8.2.2"
 [tool.poetry.dev-dependencies]
 pytest = ">=6.0"
 pytest-timeout = "^2.3.1"
+pytest-cov = "^5.0.0"
 tox = ">=3.20.1"
 pre-commit = ">=2.17.0"
 bump2version = "*"