diff --git a/.azure-pipelines/azure-pipelines-benchmarks.yml b/.azure-pipelines/azure-pipelines-benchmarks.yml
index 91b1e08b8b..b2d8206333 100644
--- a/.azure-pipelines/azure-pipelines-benchmarks.yml
+++ b/.azure-pipelines/azure-pipelines-benchmarks.yml
@@ -26,10 +26,10 @@ jobs:
 
   - script: |
       python -m pip install --upgrade pip
-      python -m pip install wheel
+      python -m pip install wheel build
       python -m pip install --no-cache-dir -r requirements.txt
       python -m pip install --no-cache-dir -r requirements-optional.txt
-      python -m pip install asv==0.6.1
+      python -m pip install asv
     displayName: 'Install requirements'
 
   - script: |
diff --git a/.pylintrc b/.pylintrc
index 80b60b1f82..b2c5bb5332 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -76,7 +76,11 @@ disable=missing-docstring,
         consider-using-f-string,
         # TODO: Remove this once update the code base.
         unnecessary-lambda-assignment,
-        use-dict-literal
+        use-dict-literal,
+        possibly-used-before-assignment,
+        # TODO (maybe): Remove this if the exess of issues related to that are fixed
+        # https://github.com/pylint-dev/pylint/issues?q=is%3Aissue+is%3Aopen+used-before-assignment+label%3A%22C%3A+used-before-assignment%22
+        used-before-assignment
 
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option
diff --git a/arviz/stats/stats.py b/arviz/stats/stats.py
index 7e3e211e78..9747bc5f48 100644
--- a/arviz/stats/stats.py
+++ b/arviz/stats/stats.py
@@ -270,12 +270,12 @@ def gradient(weights):
             weights[i] = u_weights / np.sum(u_weights)
 
         weights = weights.mean(axis=0)
-        ses = pd.Series(z_bs.std(axis=0), index=names)  # pylint: disable=no-member
+        ses = pd.Series(z_bs.std(axis=0), index=ics.index)  # pylint: disable=no-member
 
     elif method.lower() == "pseudo-bma":
         min_ic = ics.iloc[0][f"elpd_{ic}"]
         z_rv = np.exp((ics[f"elpd_{ic}"] - min_ic) / scale_value)
-        weights = z_rv / np.sum(z_rv)
+        weights = (z_rv / np.sum(z_rv)).to_numpy()
         ses = ics["se"]
 
     if np.any(weights):
diff --git a/arviz/tests/base_tests/test_stats.py b/arviz/tests/base_tests/test_stats.py
index 3820ff364c..57b4bf16b5 100644
--- a/arviz/tests/base_tests/test_stats.py
+++ b/arviz/tests/base_tests/test_stats.py
@@ -179,7 +179,7 @@ def test_compare_same(centered_eight, multidim_models, method, multidim):
     else:
         data_dict = {"first": centered_eight, "second": centered_eight}
 
-    weight = compare(data_dict, method=method)["weight"]
+    weight = compare(data_dict, method=method)["weight"].to_numpy()
     assert_allclose(weight[0], weight[1])
     assert_allclose(np.sum(weight), 1.0)
 
diff --git a/asv_benchmarks/asv.conf.json b/asv_benchmarks/asv.conf.json
index 7a421e18a6..4d9ea11d71 100644
--- a/asv_benchmarks/asv.conf.json
+++ b/asv_benchmarks/asv.conf.json
@@ -35,7 +35,14 @@
     // If missing or the empty string, the tool will be automatically
     // determined by looking for tools on the PATH environment
     // variable.
-    "environment_type": "conda",
+    "environment_type": "virtualenv",
+
+    // The command to run to build the project.
+    // copied from https://github.com/sympy/sympy/issues/26239 to fix the libmamba issue
+    "build_command": [
+        "python -m pip install build",
+        "python -m build --wheel -o {build_cache_dir} {build_dir}"
+    ],
 
     // timeout in seconds for installing any dependencies in environment
     // defaults to 10 min
@@ -50,7 +57,7 @@
 
     // The list of conda channel names to be searched for benchmark
     // dependency packages in the specified order
-    "conda_channels": ["conda-forge", "defaults",],
+    // "conda_channels": ["conda-forge", "defaults",],
 
     // The matrix of dependencies to test.  Each key is the name of a
     // package (in PyPI) and the values are version numbers.  An empty