diff --git a/.buildkite/scripts/steps/es_serverless/promote_es_serverless_image.sh b/.buildkite/scripts/steps/es_serverless/promote_es_serverless_image.sh
index f1c7de0f81396..4598e03b1cdb7 100755
--- a/.buildkite/scripts/steps/es_serverless/promote_es_serverless_image.sh
+++ b/.buildkite/scripts/steps/es_serverless/promote_es_serverless_image.sh
@@ -77,6 +77,6 @@ steps:
     async: true
     build:
       env:
-        IMAGES_CONFIG="kibana/images.yml"
-        RETRY="1"
+        IMAGES_CONFIG: "kibana/images.yml"
+        RETRY: "1"
 EOF
diff --git a/.buildkite/scripts/steps/es_snapshots/promote.sh b/.buildkite/scripts/steps/es_snapshots/promote.sh
index cb717ac5c9229..d09ef2d2420ac 100755
--- a/.buildkite/scripts/steps/es_snapshots/promote.sh
+++ b/.buildkite/scripts/steps/es_snapshots/promote.sh
@@ -23,7 +23,7 @@ steps:
     async: true
     build:
       env:
-        IMAGES_CONFIG="kibana/images.yml"
-        RETRY="1"
+        IMAGES_CONFIG: "kibana/images.yml"
+        RETRY: "1"
 EOF
 fi