diff --git a/discovery/slides-v1.json b/discovery/slides-v1.json
index 8e7381427c..1b29a9210c 100644
--- a/discovery/slides-v1.json
+++ b/discovery/slides-v1.json
@@ -313,7 +313,7 @@
       }
     }
   },
-  "revision": "20201120",
+  "revision": "20210302",
   "rootUrl": "https://slides.googleapis.com/",
   "schemas": {
     "AffineTransform": {
@@ -394,6 +394,39 @@
       },
       "type": "object"
     },
+    "Autofit": {
+      "description": "The autofit properties of a Shape.",
+      "id": "Autofit",
+      "properties": {
+        "autofitType": {
+          "description": "The autofit type of the shape. If the autofit type is AUTOFIT_TYPE_UNSPECIFIED, the autofit type is inherited from a parent placeholder if it exists. The field is automatically set to NONE if a request is made that might affect text fitting within its bounding text box. In this case the font_scale is applied to the font_size and the line_spacing_reduction is applied to the line_spacing. Both properties are also reset to default values.",
+          "enum": [
+            "AUTOFIT_TYPE_UNSPECIFIED",
+            "NONE",
+            "TEXT_AUTOFIT",
+            "SHAPE_AUTOFIT"
+          ],
+          "enumDescriptions": [
+            "The autofit type is unspecified.",
+            "Do not autofit.",
+            "Shrink text on overflow to fit the shape.",
+            "Resize the shape to fit the text."
+          ],
+          "type": "string"
+        },
+        "fontScale": {
+          "description": "The font scale applied to the shape. For shapes with autofit_type NONE or SHAPE_AUTOFIT, this value is the default value of 1. For TEXT_AUTOFIT, this value multiplied by the font_size gives the font size that is rendered in the editor. This property is read-only.",
+          "format": "float",
+          "type": "number"
+        },
+        "lineSpacingReduction": {
+          "description": "The line spacing reduction applied to the shape. For shapes with autofit_type NONE or SHAPE_AUTOFIT, this value is the default value of 0. For TEXT_AUTOFIT, this value subtracted from the line_spacing gives the line spacing that is rendered in the editor. This property is read-only.",
+          "format": "float",
+          "type": "number"
+        }
+      },
+      "type": "object"
+    },
     "BatchUpdatePresentationRequest": {
       "description": "Request message for PresentationsService.BatchUpdatePresentation.",
       "id": "BatchUpdatePresentationRequest",
@@ -3330,9 +3363,13 @@
       "type": "object"
     },
     "ShapeProperties": {
-      "description": "The properties of a Shape. If the shape is a placeholder shape as determined by the placeholder field, then these properties may be inherited from a parent placeholder shape. Determining the rendered value of the property depends on the corresponding property_state field value.",
+      "description": "The properties of a Shape. If the shape is a placeholder shape as determined by the placeholder field, then these properties may be inherited from a parent placeholder shape. Determining the rendered value of the property depends on the corresponding property_state field value. Any text autofit settings on the shape are automatically deactivated by requests that can impact how text fits in the shape.",
       "id": "ShapeProperties",
       "properties": {
+        "autofit": {
+          "$ref": "Autofit",
+          "description": "The autofit properties of the shape. This property is only set for shapes that allow text."
+        },
         "contentAlignment": {
           "description": "The alignment of the content in the shape. If unspecified, the alignment is inherited from a parent placeholder if it exists. If the shape has no parent, the default alignment matches the alignment for new shapes created in the Slides editor.",
           "enum": [
diff --git a/src/apis/slides/v1.ts b/src/apis/slides/v1.ts
index 86e115b9a4..cbcc61318a 100644
--- a/src/apis/slides/v1.ts
+++ b/src/apis/slides/v1.ts
@@ -158,6 +158,23 @@ export namespace slides_v1 {
      */
     unit?: string | null;
   }
+  /**
+   * The autofit properties of a Shape.
+   */
+  export interface Schema$Autofit {
+    /**
+     * The autofit type of the shape. If the autofit type is AUTOFIT_TYPE_UNSPECIFIED, the autofit type is inherited from a parent placeholder if it exists. The field is automatically set to NONE if a request is made that might affect text fitting within its bounding text box. In this case the font_scale is applied to the font_size and the line_spacing_reduction is applied to the line_spacing. Both properties are also reset to default values.
+     */
+    autofitType?: string | null;
+    /**
+     * The font scale applied to the shape. For shapes with autofit_type NONE or SHAPE_AUTOFIT, this value is the default value of 1. For TEXT_AUTOFIT, this value multiplied by the font_size gives the font size that is rendered in the editor. This property is read-only.
+     */
+    fontScale?: number | null;
+    /**
+     * The line spacing reduction applied to the shape. For shapes with autofit_type NONE or SHAPE_AUTOFIT, this value is the default value of 0. For TEXT_AUTOFIT, this value subtracted from the line_spacing gives the line spacing that is rendered in the editor. This property is read-only.
+     */
+    lineSpacingReduction?: number | null;
+  }
   /**
    * A TextElement kind that represents auto text.
    */
@@ -1740,9 +1757,13 @@ export namespace slides_v1 {
     solidFill?: Schema$SolidFill;
   }
   /**
-   * The properties of a Shape. If the shape is a placeholder shape as determined by the placeholder field, then these properties may be inherited from a parent placeholder shape. Determining the rendered value of the property depends on the corresponding property_state field value.
+   * The properties of a Shape. If the shape is a placeholder shape as determined by the placeholder field, then these properties may be inherited from a parent placeholder shape. Determining the rendered value of the property depends on the corresponding property_state field value. Any text autofit settings on the shape are automatically deactivated by requests that can impact how text fits in the shape.
    */
   export interface Schema$ShapeProperties {
+    /**
+     * The autofit properties of the shape. This property is only set for shapes that allow text.
+     */
+    autofit?: Schema$Autofit;
     /**
      * The alignment of the content in the shape. If unspecified, the alignment is inherited from a parent placeholder if it exists. If the shape has no parent, the default alignment matches the alignment for new shapes created in the Slides editor.
      */