diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ea605bc..c28d0fb 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -40,7 +40,7 @@ jobs:
         cache-dependency-path: poetry.lock
 
     - name: Install dependencies
-      run: poetry install
+      run: poetry install --with coveralls
 
     - name: Lint with flake8
       run: |
diff --git a/poetry.lock b/poetry.lock
index 8f08d5d..73c0f90 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -417,4 +417,4 @@ zstd = ["zstandard (>=0.18.0)"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "5f5a0155b63f6c7786fbe9dc1608694443543ad121ba079a4f81dabc17c14d4e"
+content-hash = "bf043aab50a13396fe8b7d472defa69fd4d9c578ca98e97d0c0b7c4901f22790"
diff --git a/pyproject.toml b/pyproject.toml
index e2bfabf..33dde2e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,6 +13,11 @@ python = "^3.8"
 pytest = "^7.4.3"
 pytest-cov = "^4.1.0"
 flake8 = {version = "^6.1.0", python = "^3.8.1"}
+
+[tool.poetry.group.coveralls]
+optional = true
+
+[tool.poetry.group.coveralls.dependencies]
 coverage = {extras = ["toml"], version = ">6.1.1,<7.0"}
 coveralls = "^3.3.1"