diff --git a/docs/data/data-grid/row-selection/CheckboxSelectionIndeterminateGrid.js b/docs/data/data-grid/row-selection/CheckboxSelectionIndeterminateGrid.js
deleted file mode 100644
index 88493e2bf3a7..000000000000
--- a/docs/data/data-grid/row-selection/CheckboxSelectionIndeterminateGrid.js
+++ /dev/null
@@ -1,17 +0,0 @@
-import * as React from 'react';
-import { DataGrid } from '@mui/x-data-grid';
-import { useDemoData } from '@mui/x-data-grid-generator';
-
-export default function CheckboxSelectionIndeterminateGrid() {
-  const { data } = useDemoData({
-    dataSet: 'Commodity',
-    rowLength: 10,
-    maxColumns: 5,
-  });
-
-  return (
-    <div style={{ width: '100%', height: 300 }}>
-      <DataGrid {...data} checkboxSelection indeterminateCheckboxAction="select" />
-    </div>
-  );
-}
diff --git a/docs/data/data-grid/row-selection/CheckboxSelectionIndeterminateGrid.tsx b/docs/data/data-grid/row-selection/CheckboxSelectionIndeterminateGrid.tsx
deleted file mode 100644
index 88493e2bf3a7..000000000000
--- a/docs/data/data-grid/row-selection/CheckboxSelectionIndeterminateGrid.tsx
+++ /dev/null
@@ -1,17 +0,0 @@
-import * as React from 'react';
-import { DataGrid } from '@mui/x-data-grid';
-import { useDemoData } from '@mui/x-data-grid-generator';
-
-export default function CheckboxSelectionIndeterminateGrid() {
-  const { data } = useDemoData({
-    dataSet: 'Commodity',
-    rowLength: 10,
-    maxColumns: 5,
-  });
-
-  return (
-    <div style={{ width: '100%', height: 300 }}>
-      <DataGrid {...data} checkboxSelection indeterminateCheckboxAction="select" />
-    </div>
-  );
-}
diff --git a/docs/data/data-grid/row-selection/CheckboxSelectionIndeterminateGrid.tsx.preview b/docs/data/data-grid/row-selection/CheckboxSelectionIndeterminateGrid.tsx.preview
deleted file mode 100644
index 9091ca3b75cc..000000000000
--- a/docs/data/data-grid/row-selection/CheckboxSelectionIndeterminateGrid.tsx.preview
+++ /dev/null
@@ -1 +0,0 @@
-<DataGrid {...data} checkboxSelection indeterminateCheckboxAction="select" />
\ No newline at end of file
diff --git a/docs/data/data-grid/row-selection/row-selection.md b/docs/data/data-grid/row-selection/row-selection.md
index 84210a5a343d..3414ceb1695e 100644
--- a/docs/data/data-grid/row-selection/row-selection.md
+++ b/docs/data/data-grid/row-selection/row-selection.md
@@ -71,13 +71,6 @@ Always set the `checkboxSelection` prop to `true` even when providing a custom c
 Otherwise, the Data Grid might remove your column.
 :::
 
-### Customize indeterminate checkbox behavior
-
-The parent checkboxes (like "Select All" checkbox) when clicked in an indeterminate state will deselect the selected rows.
-You can customize this behavior by using the [`indeterminateCheckboxAction` prop](/x/api/data-grid/data-grid/#data-grid-prop-indeterminateCheckboxAction).
-
-{{"demo": "CheckboxSelectionIndeterminateGrid.js", "bg": "inline"}}
-
 ### Visible rows selection [<span class="plan-pro"></span>](/x/introduction/licensing/#pro-plan 'Pro plan')
 
 By default, when you click the "Select All" checkbox, all rows in the Data Grid are selected.
diff --git a/docs/data/migration/migration-data-grid-v7/migration-data-grid-v7.md b/docs/data/migration/migration-data-grid-v7/migration-data-grid-v7.md
index eea548d0fbc0..db1f4b384786 100644
--- a/docs/data/migration/migration-data-grid-v7/migration-data-grid-v7.md
+++ b/docs/data/migration/migration-data-grid-v7/migration-data-grid-v7.md
@@ -33,27 +33,11 @@ Since v8 is a major release, it contains some changes that affect the public API
 These changes were done for consistency, improve stability and make room for new features.
 Below are described the steps you need to make to migrate from v7 to v8.
 
-:::info
-The list is currently empty, but as we move forward with development during the alpha and beta phases, we'll feed this page with all changes in the API.
-:::
-
-<!-- ### Columns
-
-TBD
-
-### Rows
-
-TBD
-
-### `apiRef` methods
-
-TBD
-
 ### Selection
 
-TBD
+- The prop `indeterminateCheckboxAction` has been removed. Clicking on an indeterminate checkbox "selects" the unselected descendants.
 
-### Accessibility
+<!-- ### Accessibility
 
 TBD
 
diff --git a/docs/pages/x/api/data-grid/data-grid-premium.json b/docs/pages/x/api/data-grid/data-grid-premium.json
index 1f5926d0df76..76ea58a62546 100644
--- a/docs/pages/x/api/data-grid/data-grid-premium.json
+++ b/docs/pages/x/api/data-grid/data-grid-premium.json
@@ -187,10 +187,6 @@
       },
       "default": "false"
     },
-    "indeterminateCheckboxAction": {
-      "type": { "name": "enum", "description": "'deselect'<br>&#124;&nbsp;'select'" },
-      "default": "\"deselect\""
-    },
     "initialState": { "type": { "name": "object" } },
     "isCellEditable": {
       "type": { "name": "func" },
diff --git a/docs/pages/x/api/data-grid/data-grid-pro.json b/docs/pages/x/api/data-grid/data-grid-pro.json
index 68cdcb294447..c56fdb7fd1b7 100644
--- a/docs/pages/x/api/data-grid/data-grid-pro.json
+++ b/docs/pages/x/api/data-grid/data-grid-pro.json
@@ -161,10 +161,6 @@
       },
       "default": "false"
     },
-    "indeterminateCheckboxAction": {
-      "type": { "name": "enum", "description": "'deselect'<br>&#124;&nbsp;'select'" },
-      "default": "\"deselect\""
-    },
     "initialState": { "type": { "name": "object" } },
     "isCellEditable": {
       "type": { "name": "func" },
diff --git a/docs/pages/x/api/data-grid/data-grid.json b/docs/pages/x/api/data-grid/data-grid.json
index d681d91e252e..3e0425377810 100644
--- a/docs/pages/x/api/data-grid/data-grid.json
+++ b/docs/pages/x/api/data-grid/data-grid.json
@@ -129,10 +129,6 @@
       },
       "default": "false"
     },
-    "indeterminateCheckboxAction": {
-      "type": { "name": "enum", "description": "'deselect'<br>&#124;&nbsp;'select'" },
-      "default": "\"deselect\""
-    },
     "initialState": { "type": { "name": "object" } },
     "isCellEditable": {
       "type": { "name": "func" },
diff --git a/docs/translations/api-docs/data-grid/data-grid-premium/data-grid-premium.json b/docs/translations/api-docs/data-grid/data-grid-premium/data-grid-premium.json
index f28eb0895d65..31694d362767 100644
--- a/docs/translations/api-docs/data-grid/data-grid-premium/data-grid-premium.json
+++ b/docs/translations/api-docs/data-grid/data-grid-premium/data-grid-premium.json
@@ -205,9 +205,6 @@
     "ignoreValueFormatterDuringExport": {
       "description": "If <code>true</code>, the Data Grid will not use <code>valueFormatter</code> when exporting to CSV or copying to clipboard. If an object is provided, you can choose to ignore the <code>valueFormatter</code> for CSV export or clipboard export."
     },
-    "indeterminateCheckboxAction": {
-      "description": "If <code>select</code>, a group header checkbox in indeterminate state (like &quot;Select All&quot; checkbox) will select all the rows under it. If <code>deselect</code>, it will deselect all the rows under it. Works only if <code>checkboxSelection</code> is enabled."
-    },
     "initialState": {
       "description": "The initial state of the DataGridPremium. The data in it is set in the state on initialization but isn&#39;t controlled. If one of the data in <code>initialState</code> is also being controlled, then the control state wins."
     },
diff --git a/docs/translations/api-docs/data-grid/data-grid-pro/data-grid-pro.json b/docs/translations/api-docs/data-grid/data-grid-pro/data-grid-pro.json
index c39f3dd3c28e..dbac4fd0c9af 100644
--- a/docs/translations/api-docs/data-grid/data-grid-pro/data-grid-pro.json
+++ b/docs/translations/api-docs/data-grid/data-grid-pro/data-grid-pro.json
@@ -186,9 +186,6 @@
     "ignoreValueFormatterDuringExport": {
       "description": "If <code>true</code>, the Data Grid will not use <code>valueFormatter</code> when exporting to CSV or copying to clipboard. If an object is provided, you can choose to ignore the <code>valueFormatter</code> for CSV export or clipboard export."
     },
-    "indeterminateCheckboxAction": {
-      "description": "If <code>select</code>, a group header checkbox in indeterminate state (like &quot;Select All&quot; checkbox) will select all the rows under it. If <code>deselect</code>, it will deselect all the rows under it. Works only if <code>checkboxSelection</code> is enabled."
-    },
     "initialState": {
       "description": "The initial state of the DataGridPro. The data in it will be set in the state on initialization but will not be controlled. If one of the data in <code>initialState</code> is also being controlled, then the control state wins."
     },
diff --git a/docs/translations/api-docs/data-grid/data-grid/data-grid.json b/docs/translations/api-docs/data-grid/data-grid/data-grid.json
index d0a980e2258c..9aa616d6f50d 100644
--- a/docs/translations/api-docs/data-grid/data-grid/data-grid.json
+++ b/docs/translations/api-docs/data-grid/data-grid/data-grid.json
@@ -139,9 +139,6 @@
     "ignoreValueFormatterDuringExport": {
       "description": "If <code>true</code>, the Data Grid will not use <code>valueFormatter</code> when exporting to CSV or copying to clipboard. If an object is provided, you can choose to ignore the <code>valueFormatter</code> for CSV export or clipboard export."
     },
-    "indeterminateCheckboxAction": {
-      "description": "If <code>select</code>, a group header checkbox in indeterminate state (like &quot;Select All&quot; checkbox) will select all the rows under it. If <code>deselect</code>, it will deselect all the rows under it. Works only if <code>checkboxSelection</code> is enabled."
-    },
     "initialState": {
       "description": "The initial state of the DataGrid. The data in it will be set in the state on initialization but will not be controlled. If one of the data in <code>initialState</code> is also being controlled, then the control state wins."
     },
diff --git a/packages/x-data-grid-premium/src/DataGridPremium/DataGridPremium.tsx b/packages/x-data-grid-premium/src/DataGridPremium/DataGridPremium.tsx
index 0566094f468a..d6b2763a77e2 100644
--- a/packages/x-data-grid-premium/src/DataGridPremium/DataGridPremium.tsx
+++ b/packages/x-data-grid-premium/src/DataGridPremium/DataGridPremium.tsx
@@ -482,14 +482,6 @@ DataGridPremiumRaw.propTypes = {
     }),
     PropTypes.bool,
   ]),
-  /**
-   * If `select`, a group header checkbox in indeterminate state (like "Select All" checkbox)
-   * will select all the rows under it.
-   * If `deselect`, it will deselect all the rows under it.
-   * Works only if `checkboxSelection` is enabled.
-   * @default "deselect"
-   */
-  indeterminateCheckboxAction: PropTypes.oneOf(['deselect', 'select']),
   /**
    * The initial state of the DataGridPremium.
    * The data in it is set in the state on initialization but isn't controlled.
diff --git a/packages/x-data-grid-premium/src/tests/rowSelection.DataGridPremium.test.tsx b/packages/x-data-grid-premium/src/tests/rowSelection.DataGridPremium.test.tsx
index 69a67346684e..da9e7161db23 100644
--- a/packages/x-data-grid-premium/src/tests/rowSelection.DataGridPremium.test.tsx
+++ b/packages/x-data-grid-premium/src/tests/rowSelection.DataGridPremium.test.tsx
@@ -154,43 +154,18 @@ describe('<DataGridPremium /> - Row selection', () => {
       expect(apiRef.current.state.rowSelection.length).to.equal(expectedCount);
     });
 
-    describe("prop: indeterminateCheckboxAction = 'select'", () => {
-      it('should select all the children when selecting an indeterminate parent', () => {
-        render(
-          <Test
-            defaultGroupingExpansionDepth={-1}
-            density="compact"
-            indeterminateCheckboxAction="select"
-          />,
-        );
-
-        fireEvent.click(getCell(2, 0).querySelector('input')!);
-        expect(getCell(0, 0).querySelector('input')!).to.have.attr('data-indeterminate', 'true');
-        fireEvent.click(getCell(0, 0).querySelector('input')!);
-        expect(apiRef.current.getSelectedRows()).to.have.keys([
-          0,
-          1,
-          2,
-          'auto-generated-row-category1/Cat A',
-        ]);
-      });
-    });
+    it('should select all the children when selecting an indeterminate parent', () => {
+      render(<Test defaultGroupingExpansionDepth={-1} density="compact" />);
 
-    describe("prop: indeterminateCheckboxAction = 'deselect'", () => {
-      it('should deselect all the children when selecting an indeterminate parent', () => {
-        render(
-          <Test
-            defaultGroupingExpansionDepth={-1}
-            density="compact"
-            indeterminateCheckboxAction="deselect"
-          />,
-        );
-
-        fireEvent.click(getCell(2, 0).querySelector('input')!);
-        expect(getCell(0, 0).querySelector('input')!).to.have.attr('data-indeterminate', 'true');
-        fireEvent.click(getCell(0, 0).querySelector('input')!);
-        expect(apiRef.current.getSelectedRows().size).to.equal(0);
-      });
+      fireEvent.click(getCell(2, 0).querySelector('input')!);
+      expect(getCell(0, 0).querySelector('input')!).to.have.attr('data-indeterminate', 'true');
+      fireEvent.click(getCell(0, 0).querySelector('input')!);
+      expect(apiRef.current.getSelectedRows()).to.have.keys([
+        0,
+        1,
+        2,
+        'auto-generated-row-category1/Cat A',
+      ]);
     });
   });
 });
diff --git a/packages/x-data-grid-pro/src/DataGridPro/DataGridPro.tsx b/packages/x-data-grid-pro/src/DataGridPro/DataGridPro.tsx
index 206d7489f3dd..7c8113a5e226 100644
--- a/packages/x-data-grid-pro/src/DataGridPro/DataGridPro.tsx
+++ b/packages/x-data-grid-pro/src/DataGridPro/DataGridPro.tsx
@@ -437,14 +437,6 @@ DataGridProRaw.propTypes = {
     }),
     PropTypes.bool,
   ]),
-  /**
-   * If `select`, a group header checkbox in indeterminate state (like "Select All" checkbox)
-   * will select all the rows under it.
-   * If `deselect`, it will deselect all the rows under it.
-   * Works only if `checkboxSelection` is enabled.
-   * @default "deselect"
-   */
-  indeterminateCheckboxAction: PropTypes.oneOf(['deselect', 'select']),
   /**
    * The initial state of the DataGridPro.
    * The data in it will be set in the state on initialization but will not be controlled.
diff --git a/packages/x-data-grid-pro/src/tests/rowSelection.DataGridPro.test.tsx b/packages/x-data-grid-pro/src/tests/rowSelection.DataGridPro.test.tsx
index c9e93334b13a..2a5883e2b8a0 100644
--- a/packages/x-data-grid-pro/src/tests/rowSelection.DataGridPro.test.tsx
+++ b/packages/x-data-grid-pro/src/tests/rowSelection.DataGridPro.test.tsx
@@ -299,7 +299,7 @@ describe('<DataGridPro /> - Row selection', () => {
       expect(selectAllCheckbox.checked).to.equal(true);
     });
 
-    it('should unselect all rows of all the pages if 1 row of another page is selected', () => {
+    it('should select all rows of all the pages if 1 row of another page is selected', () => {
       render(
         <TestDataGridSelection
           checkboxSelection
@@ -315,8 +315,8 @@ describe('<DataGridPro /> - Row selection', () => {
         name: /select all rows/i,
       });
       fireEvent.click(selectAllCheckbox);
-      expect(apiRef.current.getSelectedRows()).to.have.length(0);
-      expect(selectAllCheckbox.checked).to.equal(false);
+      expect(apiRef.current.getSelectedRows()).to.have.length(4);
+      expect(selectAllCheckbox.checked).to.equal(true);
     });
 
     it('should select all visible rows if pagination is not enabled', () => {
@@ -405,7 +405,7 @@ describe('<DataGridPro /> - Row selection', () => {
       expect(selectAllCheckbox.checked).to.equal(true);
     });
 
-    it('should unselect all the rows of the current page if 1 row of the current page is selected', () => {
+    it('should select all the rows of the current page if 1 row of the current page is selected', () => {
       render(
         <TestDataGridSelection
           checkboxSelection
@@ -425,8 +425,8 @@ describe('<DataGridPro /> - Row selection', () => {
         name: /select all rows/i,
       });
       fireEvent.click(selectAllCheckbox);
-      expect(apiRef.current.getSelectedRows()).to.have.keys([0]);
-      expect(selectAllCheckbox.checked).to.equal(false);
+      expect(apiRef.current.getSelectedRows()).to.have.keys([0, 2, 3]);
+      expect(selectAllCheckbox.checked).to.equal(true);
     });
 
     it('should not set the header checkbox in a indeterminate state when some rows of other pages are not selected', () => {
@@ -832,38 +832,13 @@ describe('<DataGridPro /> - Row selection', () => {
       expect(apiRef.current.getSelectedRows()).to.have.keys([11, 12, 13, 14]);
     });
 
-    describe("prop: indeterminateCheckboxAction = 'select'", () => {
-      it('should select all the children when selecting an indeterminate parent', () => {
-        render(
-          <SelectionPropagationGrid
-            defaultGroupingExpansionDepth={-1}
-            density="compact"
-            indeterminateCheckboxAction="select"
-          />,
-        );
-
-        fireEvent.click(getCell(2, 0).querySelector('input')!);
-        expect(getCell(1, 0).querySelector('input')!).to.have.attr('data-indeterminate', 'true');
-        fireEvent.click(getCell(1, 0).querySelector('input')!);
-        expect(apiRef.current.getSelectedRows()).to.have.keys([1, 2, 3, 4, 5, 6, 7]);
-      });
-    });
-
-    describe("prop: indeterminateCheckboxAction = 'deselect'", () => {
-      it('should deselect all the children when selecting an indeterminate parent', () => {
-        render(
-          <SelectionPropagationGrid
-            defaultGroupingExpansionDepth={-1}
-            density="compact"
-            indeterminateCheckboxAction="deselect"
-          />,
-        );
+    it('should select all the children when selecting an indeterminate parent', () => {
+      render(<SelectionPropagationGrid defaultGroupingExpansionDepth={-1} density="compact" />);
 
-        fireEvent.click(getCell(2, 0).querySelector('input')!);
-        expect(getCell(1, 0).querySelector('input')!).to.have.attr('data-indeterminate', 'true');
-        fireEvent.click(getCell(1, 0).querySelector('input')!);
-        expect(apiRef.current.getSelectedRows().size).to.equal(0);
-      });
+      fireEvent.click(getCell(2, 0).querySelector('input')!);
+      expect(getCell(1, 0).querySelector('input')!).to.have.attr('data-indeterminate', 'true');
+      fireEvent.click(getCell(1, 0).querySelector('input')!);
+      expect(apiRef.current.getSelectedRows()).to.have.keys([1, 2, 3, 4, 5, 6, 7]);
     });
 
     describe('prop: keepNonExistentRowsSelected = true', () => {
diff --git a/packages/x-data-grid/src/DataGrid/DataGrid.tsx b/packages/x-data-grid/src/DataGrid/DataGrid.tsx
index 2c33f6ec8e70..d908551b9a84 100644
--- a/packages/x-data-grid/src/DataGrid/DataGrid.tsx
+++ b/packages/x-data-grid/src/DataGrid/DataGrid.tsx
@@ -364,14 +364,6 @@ DataGridRaw.propTypes = {
     }),
     PropTypes.bool,
   ]),
-  /**
-   * If `select`, a group header checkbox in indeterminate state (like "Select All" checkbox)
-   * will select all the rows under it.
-   * If `deselect`, it will deselect all the rows under it.
-   * Works only if `checkboxSelection` is enabled.
-   * @default "deselect"
-   */
-  indeterminateCheckboxAction: PropTypes.oneOf(['deselect', 'select']),
   /**
    * The initial state of the DataGrid.
    * The data in it will be set in the state on initialization but will not be controlled.
diff --git a/packages/x-data-grid/src/components/columnSelection/GridCellCheckboxRenderer.tsx b/packages/x-data-grid/src/components/columnSelection/GridCellCheckboxRenderer.tsx
index 5bfadd9b96f7..98a8451c56df 100644
--- a/packages/x-data-grid/src/components/columnSelection/GridCellCheckboxRenderer.tsx
+++ b/packages/x-data-grid/src/components/columnSelection/GridCellCheckboxRenderer.tsx
@@ -99,19 +99,14 @@ const GridCellCheckboxForwardRef = React.forwardRef<HTMLInputElement, GridRender
     }
 
     const label = apiRef.current.getLocaleText(
-      isChecked ? 'checkboxSelectionUnselectRow' : 'checkboxSelectionSelectRow',
+      isChecked && !isIndeterminate ? 'checkboxSelectionUnselectRow' : 'checkboxSelectionSelectRow',
     );
 
-    const checked =
-      rootProps.indeterminateCheckboxAction === 'select'
-        ? isChecked && !isIndeterminate
-        : isChecked;
-
     return (
       <rootProps.slots.baseCheckbox
         ref={handleRef}
         tabIndex={tabIndex}
-        checked={checked}
+        checked={isChecked && !isIndeterminate}
         onChange={handleChange}
         className={classes.root}
         inputProps={{ 'aria-label': label }}
diff --git a/packages/x-data-grid/src/components/columnSelection/GridHeaderCheckbox.tsx b/packages/x-data-grid/src/components/columnSelection/GridHeaderCheckbox.tsx
index f968f9108669..a3e7877b9b49 100644
--- a/packages/x-data-grid/src/components/columnSelection/GridHeaderCheckbox.tsx
+++ b/packages/x-data-grid/src/components/columnSelection/GridHeaderCheckbox.tsx
@@ -126,19 +126,16 @@ const GridHeaderCheckbox = React.forwardRef<HTMLButtonElement, GridColumnHeaderP
     }, [apiRef, handleSelectionChange]);
 
     const label = apiRef.current.getLocaleText(
-      isChecked ? 'checkboxSelectionUnselectAllRows' : 'checkboxSelectionSelectAllRows',
+      isChecked && !isIndeterminate
+        ? 'checkboxSelectionUnselectAllRows'
+        : 'checkboxSelectionSelectAllRows',
     );
 
-    const checked =
-      rootProps.indeterminateCheckboxAction === 'select'
-        ? isChecked && !isIndeterminate
-        : isChecked;
-
     return (
       <rootProps.slots.baseCheckbox
         ref={ref}
         indeterminate={isIndeterminate}
-        checked={checked}
+        checked={isChecked && !isIndeterminate}
         onChange={handleChange}
         className={classes.root}
         inputProps={{ 'aria-label': label }}
diff --git a/packages/x-data-grid/src/constants/dataGridPropsDefaultValues.ts b/packages/x-data-grid/src/constants/dataGridPropsDefaultValues.ts
index 4c69790cebb6..120a47f06c22 100644
--- a/packages/x-data-grid/src/constants/dataGridPropsDefaultValues.ts
+++ b/packages/x-data-grid/src/constants/dataGridPropsDefaultValues.ts
@@ -36,8 +36,6 @@ export const DATA_GRID_PROPS_DEFAULT_VALUES: DataGridPropsWithDefaultValues = {
   hideFooterSelectedRowCount: false,
   ignoreDiacritics: false,
   ignoreValueFormatterDuringExport: false,
-  // TODO v8: Update to 'select'
-  indeterminateCheckboxAction: 'deselect',
   keepColumnPositionIfDraggedOutside: false,
   keepNonExistentRowsSelected: false,
   loading: false,
diff --git a/packages/x-data-grid/src/models/props/DataGridProps.ts b/packages/x-data-grid/src/models/props/DataGridProps.ts
index abf591bedcd5..2e2183ec8f2a 100644
--- a/packages/x-data-grid/src/models/props/DataGridProps.ts
+++ b/packages/x-data-grid/src/models/props/DataGridProps.ts
@@ -251,14 +251,6 @@ export interface DataGridPropsWithDefaultValues<R extends GridValidRowModel = an
    * @default false
    */
   ignoreDiacritics: boolean;
-  /**
-   * If `select`, a group header checkbox in indeterminate state (like "Select All" checkbox)
-   * will select all the rows under it.
-   * If `deselect`, it will deselect all the rows under it.
-   * Works only if `checkboxSelection` is enabled.
-   * @default "deselect"
-   */
-  indeterminateCheckboxAction: 'select' | 'deselect';
   /**
    * If `true`, the selection model will retain selected rows that do not exist.
    * Useful when using server side pagination and row selections need to be retained
diff --git a/packages/x-data-grid/src/tests/rowSelection.DataGrid.test.tsx b/packages/x-data-grid/src/tests/rowSelection.DataGrid.test.tsx
index e549ffd11300..62016200ac5f 100644
--- a/packages/x-data-grid/src/tests/rowSelection.DataGrid.test.tsx
+++ b/packages/x-data-grid/src/tests/rowSelection.DataGrid.test.tsx
@@ -459,24 +459,12 @@ describe('<DataGrid /> - Row selection', () => {
       expect(grid('selectedRowCount')?.textContent).to.equal('1 row selected');
     });
 
-    describe('prop: indeterminateCheckboxAction = "select"', () => {
-      it('should select all the rows when clicking on "Select All" checkbox in indeterminate state', () => {
-        render(<TestDataGridSelection checkboxSelection indeterminateCheckboxAction="select" />);
-        const selectAllCheckbox = screen.getByRole('checkbox', { name: 'Select all rows' });
-        fireEvent.click(screen.getAllByRole('checkbox', { name: /select row/i })[0]);
-        fireEvent.click(selectAllCheckbox);
-        expect(getSelectedRowIds()).to.deep.equal([0, 1, 2, 3]);
-      });
-    });
-
-    describe('prop: indeterminateCheckboxAction = "deselect"', () => {
-      it('should deselect all the rows when clicking on "Select All" checkbox in indeterminate state', () => {
-        render(<TestDataGridSelection checkboxSelection indeterminateCheckboxAction="deselect" />);
-        const selectAllCheckbox = screen.getByRole('checkbox', { name: 'Select all rows' });
-        fireEvent.click(screen.getAllByRole('checkbox', { name: /select row/i })[0]);
-        fireEvent.click(selectAllCheckbox);
-        expect(getSelectedRowIds()).to.deep.equal([]);
-      });
+    it('should select all the rows when clicking on "Select All" checkbox in indeterminate state', () => {
+      render(<TestDataGridSelection checkboxSelection />);
+      const selectAllCheckbox = screen.getByRole('checkbox', { name: 'Select all rows' });
+      fireEvent.click(screen.getAllByRole('checkbox', { name: /select row/i })[0]);
+      fireEvent.click(selectAllCheckbox);
+      expect(getSelectedRowIds()).to.deep.equal([0, 1, 2, 3]);
     });
   });