diff --git a/docs/sql-performance-tuning.md b/docs/sql-performance-tuning.md
index 49b32e7562..e99af41635 100644
--- a/docs/sql-performance-tuning.md
+++ b/docs/sql-performance-tuning.md
@@ -85,6 +85,16 @@ that these options will be deprecated in future release as more optimizations ar
     </td>
     <td>2.0.0</td>
   </tr>
+  <tr>
+    <td><code>spark.sql.files.minPartitionNum</code></td>
+    <td>Default Parallelism</td>
+    <td>
+      The suggested (not guaranteed) minimum number of split file partitions. If not set, the default
+      value is `spark.default.parallelism`. This configuration is effective only when using file-based
+      sources such as Parquet, JSON and ORC.
+    </td>
+    <td>3.1.0</td>
+  </tr>
   <tr>
     <td><code>spark.sql.broadcastTimeout</code></td>
     <td>300</td>