diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cc528a02b..ffbf8c290 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -31,16 +31,13 @@ jobs:
         config:
           - os: windows-latest
             python: "3.9"
-            resolution: highest
-            extras: ci,optional
+            #extras: ci, optional
           - os: ubuntu-latest
             python: '>3.9'
-            resolution: highest
-            extras: ci,optional
+            #extras: ci, optional
           - os: macos-latest
             python: '3.10'
-            resolution: highest
-            extras: ci # test with only required dependencies installed
+            #extras: ci # test with only required dependencies installed
 
         # pytest-split automatically distributes work load so parallel jobs finish in similar time
         # update durations file with `pytest --store-durations --durations-path tests/files/.pytest-split-durations`
@@ -65,10 +62,10 @@ jobs:
       #- name: Install uv
       #  run: micromamba run -n abipy pip install uv
 
-      - name: Install pymatgen and dependencies
-        run: |
-          micromamba activate abipy
-          pip install --editable '.[${{ matrix.config.extras }}]' --resolution=${{ matrix.config.resolution }}
+      #- name: Install pymatgen and dependencies
+      #  run: |
+      #    micromamba activate abipy
+      #    pip install --editable '.[${{ matrix.config.extras }}]'
 
       - name: pytest split ${{ matrix.split }}
         run: |
diff --git a/abipy/dfpt/msqdos.py b/abipy/dfpt/msqdos.py
index 488473c57..762b08fad 100644
--- a/abipy/dfpt/msqdos.py
+++ b/abipy/dfpt/msqdos.py
@@ -655,10 +655,10 @@ def plot_uiso(self, tstart=0, tstop=600, num=50, what="displ", view="inequivalen
             set_axlims(ax, ylims, "y")
             if what == "displ":
                 ylabel = r"$U_{iso}\;(\AA^2)$" if ix == 0 else \
-                         r"Anisotropy factor ($\dfrac{\epsilon_{max}}{\epsilon_{min}}}$)"
+                         r"Anisotropy factor ($\dfrac{\epsilon_{max}}{\epsilon_{min}}$)"
             elif what == "vel":
                 ylabel = r"$V_{iso}\;(m/s)^2$" if ix == 0 else \
-                         r"Anisotropy factor ($\dfrac{\epsilon_{max}}{\epsilon_{min}}}$)"
+                         r"Anisotropy factor ($\dfrac{\epsilon_{max}}{\epsilon_{min}$)"
             else:
                 raise ValueError("Unknown value for what: `%s`" % str(what))
             ax.set_ylabel(ylabel, fontsize=fontsize)
diff --git a/docs/api/ml.rst b/docs/api/ml.rst
index e223cf50e..850fd86b1 100644
--- a/docs/api/ml.rst
+++ b/docs/api/ml.rst
@@ -45,15 +45,6 @@ ml Package
    :show-inheritance:
 
 
-:mod:`ml_relax` Package
------------------------
-
-.. automodule:: abipy.ml.ml_relax
-   :members:
-   :undoc-members:
-   :show-inheritance:
-
-
 :mod:`relax_scanner` Package
 ----------------------------
 
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 5964769bc..f5a05cae4 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -10,6 +10,7 @@ sphinxcontrib-bibtex
 jupyter-sphinx
 #graphviz or python-graphviz if conda
 graphviz
+scikit-image
 
 # For the time being:
 # solved the issue by matching jinja2 version and nb convert as follows