diff --git a/send-slack-notification/action.yaml b/send-slack-notification/action.yaml
index acfa9f1..48349ee 100644
--- a/send-slack-notification/action.yaml
+++ b/send-slack-notification/action.yaml
@@ -71,7 +71,7 @@ runs:
           [ -z "${TEST_RESULT:-}" ] && echo "The test-result input must be provided" && exit 1
           [ -z "${TEST_HEALTH:-}" ] && echo "The test-health input must be provided" && exit 1
 
-          echo "FAILED_TESTS=${FAILED_TESTS:-No failed tests}" | tee -a "$GITHUB_OUTPUT"
+          echo -e "FAILED_TESTS<<EOF\n${FAILED_TESTS:-No failed tests}\nEOF" | tee -a "$GITHUB_OUTPUT"
           echo "DASHBOARD_URL=$DASHBOARD_URL" | tee -a "$GITHUB_OUTPUT"
           echo "TEST_RESULT=$TEST_RESULT" | tee -a "$GITHUB_OUTPUT"
           echo "TEST_HEALTH=$TEST_HEALTH" | tee -a "$GITHUB_OUTPUT"