diff --git a/api/openapi-spec/swagger.json b/api/openapi-spec/swagger.json
index 6e286b0737e..095eaa75586 100644
--- a/api/openapi-spec/swagger.json
+++ b/api/openapi-spec/swagger.json
@@ -76031,7 +76031,7 @@
     ]
    },
    "io.k8s.api.core.v1.CSIPersistentVolumeSource": {
-    "description": "Represents storage that is managed by an external CSI volume driver",
+    "description": "Represents storage that is managed by an external CSI volume driver (Beta feature)",
     "required": [
      "driver",
      "volumeHandle"
@@ -78556,7 +78556,7 @@
       "$ref": "#/definitions/io.k8s.api.core.v1.ObjectReference"
      },
      "csi": {
-      "description": "CSI represents storage that handled by an external CSI driver",
+      "description": "CSI represents storage that handled by an external CSI driver (Beta feature).",
       "$ref": "#/definitions/io.k8s.api.core.v1.CSIPersistentVolumeSource"
      },
      "fc": {
diff --git a/api/swagger-spec/v1.json b/api/swagger-spec/v1.json
index 441cf975023..fac13639217 100644
--- a/api/swagger-spec/v1.json
+++ b/api/swagger-spec/v1.json
@@ -20651,7 +20651,7 @@
      },
      "csi": {
       "$ref": "v1.CSIPersistentVolumeSource",
-      "description": "CSI represents storage that handled by an external CSI driver"
+      "description": "CSI represents storage that handled by an external CSI driver (Beta feature)."
      },
      "accessModes": {
       "type": "array",
@@ -21307,7 +21307,7 @@
    },
    "v1.CSIPersistentVolumeSource": {
     "id": "v1.CSIPersistentVolumeSource",
-    "description": "Represents storage that is managed by an external CSI volume driver",
+    "description": "Represents storage that is managed by an external CSI volume driver (Beta feature)",
     "required": [
      "driver",
      "volumeHandle"
diff --git a/docs/api-reference/v1/definitions.html b/docs/api-reference/v1/definitions.html
index ff90e1d21ff..5b91a27d094 100755
--- a/docs/api-reference/v1/definitions.html
+++ b/docs/api-reference/v1/definitions.html
@@ -4164,7 +4164,7 @@ Examples:<br>
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock">csi</p></td>
-<td class="tableblock halign-left valign-top"><p class="tableblock">CSI represents storage that handled by an external CSI driver</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">CSI represents storage that handled by an external CSI driver (Beta feature).</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">false</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><a href="#_v1_csipersistentvolumesource">v1.CSIPersistentVolumeSource</a></p></td>
 <td class="tableblock halign-left valign-top"></td>
@@ -7823,7 +7823,7 @@ Examples:<br>
 <div class="sect2">
 <h3 id="_v1_csipersistentvolumesource">v1.CSIPersistentVolumeSource</h3>
 <div class="paragraph">
-<p>Represents storage that is managed by an external CSI volume driver</p>
+<p>Represents storage that is managed by an external CSI volume driver (Beta feature)</p>
 </div>
 <table class="tableblock frame-all grid-all" style="width:100%; ">
 <colgroup>
diff --git a/staging/src/k8s.io/api/core/v1/generated.proto b/staging/src/k8s.io/api/core/v1/generated.proto
index e5d8f74db65..564f9691533 100644
--- a/staging/src/k8s.io/api/core/v1/generated.proto
+++ b/staging/src/k8s.io/api/core/v1/generated.proto
@@ -170,7 +170,7 @@ message Binding {
   optional ObjectReference target = 2;
 }
 
-// Represents storage that is managed by an external CSI volume driver
+// Represents storage that is managed by an external CSI volume driver (Beta feature)
 message CSIPersistentVolumeSource {
   // Driver is the name of the driver to use for this volume.
   // Required.
@@ -2528,7 +2528,7 @@ message PersistentVolumeSource {
   // +optional
   optional StorageOSPersistentVolumeSource storageos = 21;
 
-  // CSI represents storage that handled by an external CSI driver
+  // CSI represents storage that handled by an external CSI driver (Beta feature).
   // +optional
   optional CSIPersistentVolumeSource csi = 22;
 }