diff --git a/docs/data/pulsar.yml b/docs/data/pulsar.yml
index bb4a8645..bf06a413 100644
--- a/docs/data/pulsar.yml
+++ b/docs/data/pulsar.yml
@@ -17,7 +17,7 @@
 ################################################################################
 
 version: 4.1.0
-flink_compatibility: [1.17, 1.18]
+flink_compatibility: ["1.17", "1.18"]
 variants:
   - maven: flink-connector-pulsar
     sql_url: https://repo.maven.apache.org/maven2/org/apache/flink/flink-sql-connector-pulsar/$full_version/flink-sql-connector-pulsar-$full_version.jar