diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 087660a47..1166b0e31 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -84,7 +84,8 @@ jobs:
 
       - name: Create the conda environment
         shell: bash -l {0}
-        run: mamba install -q python=${{ matrix.python_version }} pip jupyterlab_pygments==0.1.0 pytest-cov pytest-rerunfailures nodejs=18 yarn ipywidgets matplotlib xeus-cling "traitlets>=5.0.3,<6" ipykernel
+        # TODO unpin pyzmq
+        run: mamba install -q python=${{ matrix.python_version }} pip jupyterlab_pygments==0.1.0 pytest-cov pytest-rerunfailures nodejs=18 yarn ipywidgets matplotlib xeus-cling "traitlets>=5.0.3,<6" ipykernel pyzmq==25.1.0
 
       - name: Install dependencies
         shell: bash -l {0}