diff --git a/.github/workflows/contrib-tests.yml b/.github/workflows/contrib-tests.yml
index 4f597a7414..815b30f890 100644
--- a/.github/workflows/contrib-tests.yml
+++ b/.github/workflows/contrib-tests.yml
@@ -27,7 +27,7 @@ jobs:
           sudo apt-get update
           sudo apt install libbz2-dev libhdf5-serial-dev liblzo2-dev
           python3 -m pip install --upgrade setuptools==59.8.0 pip wheel
-          pip3 install --user --upgrade numpy
+          pip3 install --user --upgrade "numpy<2"
           python3 -m pip install scikit-build pytest
           pip3 install --user --no-build-isolation tvb-gdist
           cd tvb_library