diff --git a/.github/workflows/pyfesom2.yml b/.github/workflows/pyfesom2.yml
index ccaea28..e870088 100644
--- a/.github/workflows/pyfesom2.yml
+++ b/.github/workflows/pyfesom2.yml
@@ -36,13 +36,23 @@ jobs:
         path: pyfesom2
         fetch-depth: 0
 
+    - name: Update SSL on MacOS
+      if: contains(matrix.os, 'macos')
+      run: |
+          brew update
+          brew reinstall openssl
+          sudo mkdir -p /usr/local/lib
+          sudo ln -sv /opt/homebrew/opt/openssl/lib/libcrypto.3.dylib /usr/local/lib/ 
+
     - name: install conda environment
-      uses: mamba-org/provision-with-micromamba@main #/v12
+      uses: mamba-org/setup-micromamba@v2
       with:
         environment-file: main/ci/requirements-py37.yml
         environment-name: pyfesom2
-        cache-env: true
-        cache-env-key: "${{runner.os}}-${{runner.arch}}-py${{env.PYTHON_VERSION}}-${{env.TODAY}}-${{hashFiles(env.CONDA_ENV_FILE)}}"
+        cache-environment-key: "${{runner.os}}-${{runner.arch}}-py${{env.PYTHON_VERSION}}-${{env.TODAY}}-${{hashFiles(env.CONDA_ENV_FILE)}}"
+        init-shell: >-
+            bash
+            zsh
 
     # - name: Checkout git commit log 
     #   working-directory: pyfesom2
diff --git a/.github/workflows/pyfesom2_onPR.yml b/.github/workflows/pyfesom2_onPR.yml
index d5247fd..78cdfdf 100644
--- a/.github/workflows/pyfesom2_onPR.yml
+++ b/.github/workflows/pyfesom2_onPR.yml
@@ -44,13 +44,24 @@ jobs:
         path: pyfesom2
         fetch-depth: 0
 
+    - name: Update SSL on MacOS
+      if: contains(matrix.os, 'macos')
+      run: |
+          brew update
+          brew reinstall openssl
+          ls -l /opt/homebrew/opt/openssl/lib/libcrypto.3.dylib
+          sudo mkdir -p /usr/local/lib
+          sudo ln -vs /opt/homebrew/opt/openssl/lib/libcrypto.3.dylib /usr/local/lib/ 
+
     - name: install conda environment
-      uses: mamba-org/provision-with-micromamba@main #/v12
+      uses: mamba-org/setup-micromamba@v2
       with:
         environment-file: main/ci/requirements-py37.yml
         environment-name: pyfesom2
-        cache-env: true
-        cache-env-key: "${{runner.os}}-${{runner.arch}}-py${{env.PYTHON_VERSION}}-${{env.TODAY}}-${{hashFiles(env.CONDA_ENV_FILE)}}"
+        cache-envronment-key: "${{runner.os}}-${{runner.arch}}-py${{env.PYTHON_VERSION}}-${{env.TODAY}}-${{hashFiles(env.CONDA_ENV_FILE)}}"
+        init-shell: >-
+            bash
+            zsh
 
     # - name: Checkout git commit log 
     #   working-directory: pyfesom2