diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d5bce7d4c..d656839b5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
       run: |
         # conda upgrade --strict-channel-priority -c conda-forge --all
         conda install -c conda-forge 'conda-libmamba-solver<23.9'
-        mamba install -c conda-forge fenics
+        mamba install -c conda-forge fenics numpy=1.24
 
     - name: Install dependencies
       shell: bash -l {0}