diff --git a/.github/workflows/build-latest-release.yml b/.github/workflows/build-latest-release.yml
index 37ca1f99..9daa9936 100644
--- a/.github/workflows/build-latest-release.yml
+++ b/.github/workflows/build-latest-release.yml
@@ -18,6 +18,11 @@ jobs:
         os: ["ubuntu-latest"]
         python-version: ["3.10"] # ["3.10", "3.11"]
 
+    # https://github.com/marketplace/actions/setup-miniconda#use-a-default-shell
+    defaults:
+      run:
+        shell: bash -l {0}
+
     steps:
       - uses: actions/checkout@v3
       - uses: ./.github/actions/install-python-and-package
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 0f04e626..30cee8bc 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -17,6 +17,11 @@ jobs:
         os: ["ubuntu-latest"]
         python-version: ["3.10"]
 
+    # https://github.com/marketplace/actions/setup-miniconda#use-a-default-shell
+    defaults:
+      run:
+        shell: bash -l {0}
+
     steps:
       - uses: actions/checkout@v3
       - uses: ./.github/actions/install-python-and-package