diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 9a0a4cc24..965b7ee24 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -127,16 +127,17 @@ jobs:
       run: |
         # This is the hash of the commit for the PR
         # when the action is triggered by PR, empty otherwise
-        set COMMIT_ID=${{ github.event.pull_request.head.sha }}
+        COMMIT_ID=${{ github.event.pull_request.head.sha }}
         # This is the hash of the commit when triggered by push
         # but the hash of refs/pull/<n>/merge, which is different
         # from the hash of the latest commit in the PR, that's
         # why we try github.event.pull_request.head.sha first
-        set COMMIT_ID=${COMMIT_ID:-${{ github.sha }}}
-        set BUILD_SUFFIX=ci-$(date '+%Y%m%d')-$(git rev-parse --short ${COMMIT_ID})
-        set VERSION=$(grep version package.json | sed 's/.*"\([0-9][0-9]*.[0-9]*.[0-9]*\)".*/\1/g')
+        COMMIT_ID=${COMMIT_ID:-${{ github.sha }}}
+        BUILD_SUFFIX=ci-$(date '+%Y%m%d')-$(git rev-parse --short ${COMMIT_ID})
+        VERSION=$(grep version package.json | sed 's/.*"\([0-9][0-9]*.[0-9]*.[0-9]*\)".*/\1/g')
         echo "BUILD_SUFFIX=${BUILD_SUFFIX}" >> $GITHUB_ENV
         echo "BUILD_NAME=inav-configurator-${VERSION}-${BUILD_SUFFIX}" >> $GITHUB_ENV
+      shell: bash
 
     - uses: actions/setup-node@v4
       with: