diff --git a/.github/workflows/conda_build.yml b/.github/workflows/conda_build.yml
index 91270ad2..549d34a8 100644
--- a/.github/workflows/conda_build.yml
+++ b/.github/workflows/conda_build.yml
@@ -66,7 +66,7 @@ jobs:
       # Set up conda — miniforge with conda-forge as the default channel.
       # -----------------------------------------------------------------------
       - name: Set up Miniforge
-        uses: conda-incubator/setup-miniconda@v3
+        uses: conda-incubator/setup-miniconda@v4
         with:
           miniforge-version: latest
           use-mamba: true