diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index 542a2650a..e27d6715d 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -96,6 +96,10 @@ jobs:
         # commented: use with "pandas-version" in the matrix, above
         # pip install --upgrade pandas${{ matrix.pandas-version }}
 
+        # TEMPORARY Work around hgrecco/pint#2007;
+        # see https://github.com/iiasa/ixmp/issues/534
+        pip install "pint != 0.24.0" "numpy < 2"
+
     - name: Install R dependencies and tutorial requirements
       run: |
         install.packages(c("remotes", "Rcpp"))