diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 1729e4098d..0a1e835e2b 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -33,15 +33,15 @@ jobs:
 
       - name: Download datasets
         run: |
-          python -c "from river import datasets; datasets.CreditCard().download(); datasets.Elec2().download(); datasets.SMSSpam().download()"
-          python -c "from river import bandit; bandit.datasets.NewsArticles().download()"
+          poetry run python -c "from river import datasets; datasets.CreditCard().download(); datasets.Elec2().download(); datasets.SMSSpam().download()"
+          poetry run python -c "from river import bandit; bandit.datasets.NewsArticles().download()"
 
       - name: pytest [Branch]
         if: github.event_name == 'pull_request'
         run: |
-          pytest --durations=10 -n logical # Run pytest on all logical CPU cores
+          poetry run pytest --durations=10 -n logical # Run pytest on all logical CPU cores
 
       - name: pytest [Main]
         if: github.event_name == 'push'
         run: |
-          pytest -m "not datasets" --durations=10 -n logical # Run pytest on all logical CPU cores
+          poetry run pytest -m "not datasets" --durations=10 -n logical # Run pytest on all logical CPU cores
diff --git a/poetry.lock b/poetry.lock
index befb901cbc..d9580172e4 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -5629,4 +5629,4 @@ testing = ["big-O", "jaraco.functools", "jaraco.itertools", "more-itertools", "p
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.9,<3.13"
-content-hash = "44c346d61fcc892c4d3379f07ecadedfcce4136e4e32c03f7d5db1bfafd4b726"
+content-hash = "2d59fc5c46988c1b366370895adb0867b936e2615d8f8560c43255982668ce43"
diff --git a/pyproject.toml b/pyproject.toml
index df40579b61..4b273f1ac3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,6 @@ script = "build.py"
 
 [tool.poetry.dependencies]
 python = ">=3.9,<3.13"
-numpy = "^1.21"
 scipy = "^1.8.1"
 pandas = "^2.1"