diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d524884559f..1e404cb277f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -95,7 +95,7 @@ jobs:
           environment-name: mne
           create-args: >-
             python=${{ env.PYTHON_VERSION }}
-            mamba!=1.5.6
+            mamba
         if: ${{ !startswith(matrix.kind, 'pip') }}
       - run: ./tools/github_actions_dependencies.sh
       # Minimal commands on Linux (macOS stalls)