diff --git a/.github/workflows/python-package-conda.yml b/.github/workflows/python-package-conda.yml
index 14c138bff..9401458b9 100644
--- a/.github/workflows/python-package-conda.yml
+++ b/.github/workflows/python-package-conda.yml
@@ -29,7 +29,8 @@ jobs:
       - name: Install test dependencies (conda)
         shell: bash -l {0}
         run: |
-          conda install -y pytest coverage
+          # Pinning numpy and scikit-learn to prevent the issues reported in #982
+          conda install -y pytest coverage "numpy>=1.22,<2.4" "scikit-learn>=1.0"
 
       - name: Install package and run tests
         shell: bash -l {0}
diff --git a/.github/workflows/python-package-pip.yml b/.github/workflows/python-package-pip.yml
index 4790b1ecd..ee5825e7a 100644
--- a/.github/workflows/python-package-pip.yml
+++ b/.github/workflows/python-package-pip.yml
@@ -24,6 +24,8 @@ jobs:
       - name: Install dependencies (pip)
         run: |
           python -m pip install --upgrade pip
+          # Fixing #982 by pinning numpy
+          pip install "numpy>=1.22,<2.4" 
           pip install pytest coverage
           pip install -e .
 
diff --git a/environment.yml b/environment.yml
index b1c12c982..96f2cbebc 100644
--- a/environment.yml
+++ b/environment.yml
@@ -3,7 +3,7 @@ channels:
   - conda-forge
 dependencies:
   - flake8>=4.0.1
-  - numpy>=2.3.5
+  - numpy>=1.21.0,<2.4.0
   - pandas>=2.3.3
   - scipy>=1.16.3
   - scikit-learn>=1.8.0
@@ -13,4 +13,4 @@ dependencies:
   - pytest>=6.2.5
   - setuptools>=59.4.0
   - pip:
-      - markdown>=3.3.6
\ No newline at end of file
+      - markdown>=3.3.6