diff --git a/.github/workflows/test_micro.mamba.pm.yml b/.github/workflows/test_micro.mamba.pm.yml
index dbaa88d..06bb807 100644
--- a/.github/workflows/test_micro.mamba.pm.yml
+++ b/.github/workflows/test_micro.mamba.pm.yml
@@ -31,13 +31,14 @@ jobs:
       matrix:
         include:
           - {os: ubuntu-latest, shell: bash, shell-source-param: -i}
+          - {os: ubuntu-latest, shell: zsh, shell-source-param: -i}
           - {os: macos-latest, shell: zsh, shell-source-param: -i}
           - {os: macos-latest, shell: bash, shell-source-param: -l}
           - {os: windows-latest, shell: bash, shell-source-param: -l}
     steps:
       - name: Install Micromamba (${{ matrix.os }}, ${{ matrix.shell }})
         run: |
-          ${{ matrix.shell }} <(curl -sL http://micro.mamba.pm/install.sh)
+          curl -sL http://micro.mamba.pm/install.sh | ${{ matrix.shell }}
       - name: Test Micromamba
         # use either -l or -i to source .bash_profile or .bashrc/.zshrc
         run: |