diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4b89d02..4d37ef8 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -81,6 +81,7 @@ jobs:
         with:
           init-shell: >-
             cmd.exe
+            powershell
           environment-file: .github/ci_env.yml
 
       - name: Create project with cookiecutter
@@ -89,31 +90,31 @@ jobs:
           cookiecutter  . --no-input -f
 
       - name: Create and activate env
-        shell: cmd /C CALL {0}
+        shell: micromamba-shell {0}
         run: |
-          micromamba create -f xeus-mylang\environment-dev.yml  -y --name xeus_cookiecutter_test_env
+          micrommamba create -f xeus-mylang\environment-dev.yml  -y --name xeus_cookiecutter_test_env
 
       - name: Configure cmake
-        shell: cmd /C CALL {0}
+        shell: micromamba-shell {0}
         run: |
-          micromamba activate xeus_cookiecutter_test_env
+          micrommamba activate xeus_cookiecutter_test_env
           cd xeus-mylang
           mkdir -p bld
           cd bld
           cmake .. -DCMAKE_BUILD_TYPE=Release -DXEUS_BUILD_TESTS=ON -DDEPENDENCY_SEARCH_PREFIX="%CONDA_PREFIX%\Library" -DCMAKE_PREFIX_PATH="%CONDA_PREFIX%\Library" -DCMAKE_INSTALL_PREFIX="%CONDA_PREFIX%"
 
       - name: Build and install
-        shell: cmd /C CALL {0}
+        shell: micromamba-shell {0}
         run: |
-          micromamba activate xeus_cookiecutter_test_env
+          micrommamba activate xeus_cookiecutter_test_env
           cd xeus-mylang/bld
           set CL=/MP
           nmake install
 
       - name: Test
-        shell: cmd /C CALL {0}
+        shell: micromamba-shell {0}
         run: |
-          micromamba activate xeus_cookiecutter_test_env
+          micrommamba activate xeus_cookiecutter_test_env
           cd xeus-mylang/test
           pytest .  --reruns 5