diff --git a/.github/workflows/publish-aptly-release.yaml b/.github/workflows/publish-aptly-release.yaml
index a457d9c..30070f0 100644
--- a/.github/workflows/publish-aptly-release.yaml
+++ b/.github/workflows/publish-aptly-release.yaml
@@ -38,7 +38,7 @@ jobs:
                 TIMESTAMP=`date +%Y%m%d%H%M`
                 REPO_SNAPSHOT="${REPO}_${TIMESTAMP}"
 
-                read -r -d '' DATA <<- EOM
+                read -r -d '' DATA << EOM
                 {
                     "Name": "${REPO_SNAPSHOT}",
                 }
@@ -53,7 +53,7 @@ jobs:
                 
                 # create release snapshot merging the last mirror snapshot and the new repo snapshot
                 RELEASE_SNAPSHOT="${PUBLISH_PREFIX}_${REPO_SNAPSHOT}"
-                read -r -d '' DATA <<- EOM
+                read -r -d '' DATA << EOM
                 {
                     "Destination": "${RELEASE_SNAPSHOT}",
                     "Sources": [
@@ -66,7 +66,7 @@ jobs:
                 curl  -X POST -H 'Content-Type: application/json' --data "${DATA}" -u lcas:${{ secrets.APTLY_TOKEN }} ${APTLY_API}/snapshots/merge
 
                 # publish the release snapshot
-                read -r -d '' DATA <<- EOM
+                read -r -d '' DATA << EOM
                 {
                     "Snapshots": [
                         "${RELEASE_SNAPSHOT}"