diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ab542c0..b5273f7 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -109,14 +109,17 @@ jobs:
     - name: Test the package
       run: |
         source $CONDA_ROOT/etc/profile.d/conda.sh
-        solver=${{ matrix.solver }}
-        export CONDA_EXE=$(echo $CONDA_EXE | sed -E "s@/conda(.exe)?@/${solver}\1@")
         [ "$RUNNER_OS" = "Windows" ] && export PYTHONIOENCODING=UTF-8
         export PYTHONUNBUFFERED=1
         export NBVER=6
         [ 3.12 = ${{ matrix.pyver }} ] && export NBVER=7
         conda create -n testbase -c ./conda-bld nb_conda_kernels python=${{ matrix.pyver }} notebook=$NBVER pytest pytest-cov mock requests
         conda activate testbase
+        solver=${{ matrix.solver }}
+        export CONDA_EXE=$(echo $CONDA_EXE | sed -E "s@^(.*/)conda(.*)@\\1${solver}\\2@")
+        [ $solver = micromamba ] && MAMBA_EXE=$CONDA_EXE
+        [ $solver = micromamba ] && MAMBA_ROOT_PREFIX=$CONDA_PREFIX
+        $CONDA_EXE env list
         python -m nb_conda_kernels list
         python -m pytest -v --cov=nb_conda_kernels tests 2>&1 | tee build.log
         # Because Windows refuses to preserve the error code
diff --git a/nb_conda_kernels/manager.py b/nb_conda_kernels/manager.py
index fb1df21..fa53c76 100644
--- a/nb_conda_kernels/manager.py
+++ b/nb_conda_kernels/manager.py
@@ -201,11 +201,17 @@ def get_conda_info_data():
             # differences in one place
             envs = list(map(_canonicalize, conda_info.get('envs') or ()))
             base_prefix = _canonicalize(conda_info.get('conda_prefix') or conda_info.get('base environment'))
+            version = conda_info.get('conda_version') or conda_info.get('micromamba version')
             if base_prefix not in envs:
                 # Older versions of conda do not include base_prefix in the env list
                 envs.insert(0, base_prefix)
 
-            return (base_prefix, envs), msg
+            return {
+                "conda_exe": conda_exe,
+                "conda_version": version,
+                "conda_prefix": base_prefix,
+                "envs": envs,
+            }, msg
 
         class CondaInfoThread(threading.Thread):
             def run(self):
@@ -228,7 +234,7 @@ def run(self):
         # subprocess just finished
         elif t and not t.is_alive():
             t.join()
-            conda_info, msg = t.out
+            conda_info, msg = t.out, t.err
             if msg:
                 level = "info" if conda_info else "error"
             else:
@@ -255,9 +261,9 @@ def _all_envs(self):
             environments in the conda-bld directory. Returns a dict with
             canonical environment names as keys, and full paths as values.
         """
-        base_prefix, envs = self._conda_info
-        if not envs:
-            return {}
+        conda_info = self._conda_info
+        envs = conda_info['envs']
+        base_prefix = conda_info['conda_prefix']
         envs_prefix = join(base_prefix, 'envs')
         build_prefix = join(base_prefix, 'conda-bld', '')
         all_envs = {}
@@ -302,7 +308,7 @@ def _all_specs(self):
         all_specs = {}
         # We need to be able to find conda-run in the base conda environment
         # even if this package is not running there
-        conda_prefix, _ = self._conda_info
+        conda_prefix = self._conda_info['conda_prefix']
         all_envs = self._all_envs()
         for env_name, env_path in all_envs.items():
             kspec_base = join(env_path, 'share', 'jupyter', 'kernels')
diff --git a/testbed/build.sh b/testbed/build.sh
index a2bcaa7..e7b2410 100755
--- a/testbed/build.sh
+++ b/testbed/build.sh
@@ -32,6 +32,7 @@ fi
 full_deactivate
 source $CONDA_ROOT/etc/profile.d/conda.sh
 conda activate base
+conda list
 
 if [ ! -f $CONDA_ROOT/.created ]; then
     conda config --prepend channels conda-forge --system
diff --git a/testbed/croot.yml b/testbed/croot.yml
index abcf0cc..467c3fa 100644
--- a/testbed/croot.yml
+++ b/testbed/croot.yml
@@ -1,13 +1,10 @@
 name: conda
 channels:
-  - defaults
   - conda-forge
 dependencies:
-  - conda
+  - conda >24.9
   - mamba
   - micromamba
-  - conda-build
-  - conda-verify
   - notebook
   - jupyter_client
   - ipykernel
diff --git a/tests/test_config.py b/tests/test_config.py
index bee27f7..9e6fd6b 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -37,8 +37,9 @@ def test_configuration():
         print('ERROR: Could not find conda find conda.')
         exit(-1)
     print(u'Current prefix: {}'.format(sys.prefix))
-    print(u'Root prefix: {}'.format(conda_info['root_prefix']))
-    print(u'Conda version: {}'.format(conda_info['conda_version']))
+    print(u'Conda prefix: {}'.format(conda_info['conda_prefix']))
+    conda_exe = os.path.basename(conda_info['conda_exe']).replace('.exe', '')
+    print(u'Conda version: {} {}'.format(conda_exe, conda_info['conda_version']))
     print(u'Environments:')
     for env in conda_info['envs']:
         print(u'  - {}'.format(env))