diff --git a/src/components/modules/api/blocks.ts b/src/components/modules/api/blocks.ts
index 994f72adc..d3ec3bb65 100644
--- a/src/components/modules/api/blocks.ts
+++ b/src/components/modules/api/blocks.ts
@@ -228,15 +228,15 @@ export default class BlocksAPI extends Module {
    * @param {boolean?} needToFocus - flag to focus inserted Block
    * @param replace - pass true to replace the Block existed under passed index
    */
-  public insert = (
+  public insert = async (
     type: string = this.config.defaultBlock,
     data: BlockToolData = {},
     config: ToolConfig = {},
     index?: number,
     needToFocus?: boolean,
     replace?: boolean
-  ): BlockAPIInterface => {
-    const insertedBlock = this.Editor.BlockManager.insert({
+  ): Promise<BlockAPIInterface> => {
+    const insertedBlock = await this.Editor.BlockManager.insert({
       tool: type,
       data,
       index,
@@ -267,7 +267,7 @@ export default class BlocksAPI extends Module {
    * @param id - id of the block to update
    * @param data - the new data
    */
-  public update = (id: string, data: BlockToolData): void => {
+  public update = async (id: string, data: BlockToolData): Promise<void> => {
     const { BlockManager } = this.Editor;
     const block = BlockManager.getBlockById(id);
 
@@ -278,8 +278,7 @@ export default class BlocksAPI extends Module {
     }
 
     const blockIndex = BlockManager.getBlockIndex(block);
-
-    BlockManager.insert({
+    await BlockManager.insert({
       id: block.id,
       tool: block.name,
       data,
diff --git a/src/components/modules/blockEvents.ts b/src/components/modules/blockEvents.ts
index 7fece2f49..e451cb8a0 100644
--- a/src/components/modules/blockEvents.ts
+++ b/src/components/modules/blockEvents.ts
@@ -191,13 +191,13 @@ export default class BlockEvents extends Module {
       return;
     }
 
-    BlockSelection.copySelectedBlocks(event).then(() => {
+    BlockSelection.copySelectedBlocks(event).then(async () => {
       const selectionPositionIndex = BlockManager.removeSelectedBlocks();
 
       /**
        * Insert default block in place of removed ones
        */
-      const insertedBlock = BlockManager.insertDefaultBlockAtIndex(selectionPositionIndex, true);
+      const insertedBlock = await BlockManager.insertDefaultBlockAtIndex(selectionPositionIndex, true);
 
       Caret.setToBlock(insertedBlock, Caret.positions.START);
 
@@ -211,7 +211,7 @@ export default class BlockEvents extends Module {
    *
    * @param {KeyboardEvent} event - keydown
    */
-  private enter(event: KeyboardEvent): void {
+  private async enter(event: KeyboardEvent): Promise<void> {
     const { BlockManager, UI } = this.Editor;
     const currentBlock = BlockManager.currentBlock;
 
@@ -250,7 +250,7 @@ export default class BlockEvents extends Module {
        * Split the Current Block into two blocks
        * Renew local current node after split
        */
-      newCurrent = this.Editor.BlockManager.split();
+      newCurrent = await this.Editor.BlockManager.split();
     }
 
     this.Editor.Caret.setToBlock(newCurrent);
diff --git a/src/components/modules/blockManager.ts b/src/components/modules/blockManager.ts
index 9ac893bca..48d62be2e 100644
--- a/src/components/modules/blockManager.ts
+++ b/src/components/modules/blockManager.ts
@@ -15,6 +15,7 @@ import { BlockToolData, PasteEvent } from '../../../types';
 import { BlockTuneData } from '../../../types/block-tunes/block-tune-data';
 import BlockAPI from '../block/api';
 import { BlockMutationType } from '../../../types/events/block/mutation-type';
+import BlockTool from '../tools/block';
 
 /**
  * @typedef {BlockManager} BlockManager
@@ -232,23 +233,23 @@ export default class BlockManager extends Module {
    *
    * @returns {Block}
    */
-  public composeBlock({
+  public async composeBlock({
     tool: name,
     data = {},
     id = undefined,
     tunes: tunesData = {},
-  }: {tool: string; id?: string; data?: BlockToolData; tunes?: {[name: string]: BlockTuneData}}): Block {
+  }: { tool: string; id?: string; data?: BlockToolData; tunes?: { [name: string]: BlockTuneData } }): Promise<Block> {
     const readOnly = this.Editor.ReadOnly.isEnabled;
     const tool = this.Editor.Tools.blockTools.get(name);
+    const actialData = await this.composeBlockData(tool, data);
     const block = new Block({
       id,
-      data,
+      data: actialData,
       tool,
       api: this.Editor.API,
       readOnly,
       tunesData,
     });
-
     if (!readOnly) {
       this.bindBlockEvents(block);
     }
@@ -269,7 +270,7 @@ export default class BlockManager extends Module {
    *
    * @returns {Block}
    */
-  public insert({
+  public async insert({
     id = undefined,
     tool = this.config.defaultBlock,
     data = {},
@@ -284,15 +285,14 @@ export default class BlockManager extends Module {
     index?: number;
     needToFocus?: boolean;
     replace?: boolean;
-    tunes?: {[name: string]: BlockTuneData};
-  } = {}): Block {
+    tunes?: { [name: string]: BlockTuneData };
+  } = {}): Promise<Block> {
     let newIndex = index;
 
     if (newIndex === undefined) {
       newIndex = this.currentBlockIndex + (replace ? 0 : 1);
     }
-
-    const block = this.composeBlock({
+    const block = await this.composeBlock({
       id,
       tool,
       data,
@@ -339,7 +339,7 @@ export default class BlockManager extends Module {
   public replace({
     tool = this.config.defaultBlock,
     data = {},
-  }): Block {
+  }): Promise<Block> {
     return this.insert({
       tool,
       data,
@@ -355,12 +355,12 @@ export default class BlockManager extends Module {
    * @param {PasteEvent} pasteEvent - pasted data
    * @param {boolean} replace - should replace current block
    */
-  public paste(
+  public async paste(
     toolName: string,
     pasteEvent: PasteEvent,
     replace = false
-  ): Block {
-    const block = this.insert({
+  ): Promise<Block> {
+    const block = await this.insert({
       tool: toolName,
       replace,
     });
@@ -384,8 +384,8 @@ export default class BlockManager extends Module {
    *
    * @returns {Block} inserted Block
    */
-  public insertDefaultBlockAtIndex(index: number, needToFocus = false): Block {
-    const block = this.composeBlock({ tool: this.config.defaultBlock });
+  public async insertDefaultBlockAtIndex(index: number, needToFocus = false): Promise<Block> {
+    const block = await this.composeBlock({ tool: this.config.defaultBlock });
 
     this._blocks[index] = block;
 
@@ -410,7 +410,7 @@ export default class BlockManager extends Module {
    *
    * @returns {Block}
    */
-  public insertAtEnd(): Block {
+  public insertAtEnd(): Promise<Block> {
     /**
      * Define new value for current block index
      */
@@ -534,7 +534,7 @@ export default class BlockManager extends Module {
    *
    * @returns {Block}
    */
-  public split(): Block {
+  public split(): Promise<Block> {
     const extractedFragment = this.Editor.Caret.extractFragmentFromCaretPosition();
     const wrapper = $.make('div');
 
@@ -881,4 +881,24 @@ export default class BlockManager extends Module {
 
     return block;
   }
+
+  /**
+   * Retrieves default block data by creating fake block.
+   * Merges retrieved data with specified data object.
+   *
+   * @param tool - block's tool
+   * @param dataOverrides - object containing overrides for default block data
+   */
+  private async composeBlockData(tool: BlockTool, dataOverrides = {}): Promise<BlockToolData> {
+    const block = new Block({
+      tool,
+      api: this.Editor.API,
+      readOnly: true,
+      data: {},
+      tunesData: {},
+    });
+    const blockData = await block.data;
+
+    return Object.assign(blockData, dataOverrides);
+  }
 }
diff --git a/src/components/modules/caret.ts b/src/components/modules/caret.ts
index 94b54711a..2dc51a734 100644
--- a/src/components/modules/caret.ts
+++ b/src/components/modules/caret.ts
@@ -336,9 +336,9 @@ export default class Caret extends Module {
     if (lastBlock.tool.isDefault && lastBlock.isEmpty) {
       this.setToBlock(lastBlock);
     } else {
-      const newBlock = this.Editor.BlockManager.insertAtEnd();
-
-      this.setToBlock(newBlock);
+      this.Editor.BlockManager.insertAtEnd().then(newBlock => {
+        this.setToBlock(newBlock);
+      });
     }
   }
 
@@ -390,7 +390,7 @@ export default class Caret extends Module {
    *
    * @returns {boolean}
    */
-  public navigateNext(): boolean {
+  public async navigateNext(): Promise<boolean> {
     const { BlockManager } = this.Editor;
     const { currentBlock, nextContentfulBlock } = BlockManager;
     const { nextInput } = currentBlock;
@@ -417,7 +417,7 @@ export default class Caret extends Module {
        * If there is no nextBlock, but currentBlock is not default,
        * insert new default block at the end and navigate to it
        */
-      nextBlock = BlockManager.insertAtEnd();
+      nextBlock = await BlockManager.insertAtEnd();
     }
 
     if (isAtEnd) {
diff --git a/src/components/modules/paste.ts b/src/components/modules/paste.ts
index e901897b6..ac403d3dc 100644
--- a/src/components/modules/paste.ts
+++ b/src/components/modules/paste.ts
@@ -6,7 +6,6 @@ import {
   PasteEvent,
   PasteEventDetail
 } from '../../../types';
-import Block from '../block';
 import { SavedData } from '../../../types/data-formats';
 import { clean, sanitizeBlocks } from '../utils/sanitizer';
 import BlockTool from '../tools/block';
@@ -112,12 +111,12 @@ export default class Paste extends Module {
   /**
    * Tags` substitutions parameters
    */
-  private toolsTags: {[tag: string]: TagSubstitute} = {};
+  private toolsTags: { [tag: string]: TagSubstitute } = {};
 
   /**
    * Store tags to substitute by tool name
    */
-  private tagsByTool: {[tools: string]: string[]} = {};
+  private tagsByTool: { [tools: string]: string[] } = {};
 
   /** Patterns` substitutions parameters */
   private toolsPatterns: PatternSubstitute[] = [];
@@ -186,7 +185,7 @@ export default class Paste extends Module {
         this.insertEditorJSData(JSON.parse(editorJSData));
 
         return;
-      } catch (e) {} // Do nothing and continue execution as usual if error appears
+      } catch (e) { } // Do nothing and continue execution as usual if error appears
     }
 
     /**
@@ -449,7 +448,7 @@ export default class Paste extends Module {
   private async processFiles(items: FileList): Promise<void> {
     const { BlockManager } = this.Editor;
 
-    let dataToInsert: {type: string; event: PasteEvent}[];
+    let dataToInsert: { type: string; event: PasteEvent }[];
 
     dataToInsert = await Promise.all(
       Array
@@ -473,7 +472,7 @@ export default class Paste extends Module {
    *
    * @param {File} file - file to process
    */
-  private async processFile(file: File): Promise<{event: PasteEvent; type: string}> {
+  private async processFile(file: File): Promise<{ event: PasteEvent; type: string }> {
     const extension = _.getFileExtension(file);
 
     const foundConfig = Object
@@ -576,7 +575,7 @@ export default class Paste extends Module {
    * @returns {PasteData[]}
    */
   private processPlain(plain: string): PasteData[] {
-    const { defaultBlock } = this.config as {defaultBlock: string};
+    const { defaultBlock } = this.config as { defaultBlock: string };
 
     if (!plain) {
       return [];
@@ -652,9 +651,9 @@ export default class Paste extends Module {
           BlockManager.currentBlock.tool.isDefault &&
           BlockManager.currentBlock.isEmpty;
 
-        const insertedBlock = BlockManager.paste(blockData.tool, blockData.event, needToReplaceCurrentBlock);
-
-        Caret.setToBlock(insertedBlock, Caret.positions.END);
+        BlockManager.paste(blockData.tool, blockData.event, needToReplaceCurrentBlock).then(insertedBlock => {
+          Caret.setToBlock(insertedBlock, Caret.positions.END);
+        });
 
         return;
       }
@@ -681,7 +680,7 @@ export default class Paste extends Module {
    *
    * @returns {Promise<{event: PasteEvent, tool: string}>}
    */
-  private async processPattern(text: string): Promise<{event: PasteEvent; tool: string}> {
+  private async processPattern(text: string): Promise<{ event: PasteEvent; tool: string }> {
     const pattern = this.toolsPatterns.find((substitute) => {
       const execResult = substitute.pattern.exec(text);
 
@@ -718,18 +717,16 @@ export default class Paste extends Module {
   private insertBlock(data: PasteData, canReplaceCurrentBlock = false): void {
     const { BlockManager, Caret } = this.Editor;
     const { currentBlock } = BlockManager;
-    let block: Block;
 
     if (canReplaceCurrentBlock && currentBlock && currentBlock.isEmpty) {
-      block = BlockManager.paste(data.tool, data.event, true);
-      Caret.setToBlock(block, Caret.positions.END);
-
-      return;
+      BlockManager.paste(data.tool, data.event, true).then(block => {
+        Caret.setToBlock(block, Caret.positions.END);
+      });
+    } else {
+      BlockManager.paste(data.tool, data.event).then(block => {
+        Caret.setToBlock(block, Caret.positions.END);
+      });
     }
-
-    block = BlockManager.paste(data.tool, data.event);
-
-    Caret.setToBlock(block, Caret.positions.END);
   }
 
   /**
@@ -754,13 +751,13 @@ export default class Paste extends Module {
         needToReplaceCurrentBlock = isCurrentBlockDefault && BlockManager.currentBlock.isEmpty;
       }
 
-      const block = BlockManager.insert({
+      BlockManager.insert({
         tool,
         data,
         replace: needToReplaceCurrentBlock,
+      }).then(block => {
+        Caret.setToBlock(block, Caret.positions.END);
       });
-
-      Caret.setToBlock(block, Caret.positions.END);
     });
   }
 
diff --git a/src/components/modules/renderer.ts b/src/components/modules/renderer.ts
index 6f800069b..fab5be724 100644
--- a/src/components/modules/renderer.ts
+++ b/src/components/modules/renderer.ts
@@ -77,7 +77,7 @@ export default class Renderer extends Module {
 
     if (Tools.available.has(tool)) {
       try {
-        BlockManager.insert({
+        await BlockManager.insert({
           id,
           tool,
           data,
@@ -105,12 +105,11 @@ export default class Renderer extends Module {
         stubData.title = toolboxTitle || stubData.title;
       }
 
-      const stub = BlockManager.insert({
+      const stub = await BlockManager.insert({
         id,
         tool: Tools.stubTool,
         data: stubData,
-      });
-
+      })
       stub.stretched = true;
 
       _.log(`Tool «${tool}» is not found. Check 'tools' property at your initial Editor.js config.`, 'warn');
diff --git a/src/components/modules/ui.ts b/src/components/modules/ui.ts
index ead5c9ba3..7ba4aa863 100644
--- a/src/components/modules/ui.ts
+++ b/src/components/modules/ui.ts
@@ -514,19 +514,21 @@ export default class UI extends Module<UINodes> {
     if (BlockSelection.anyBlockSelected && !Selection.isSelectionExists) {
       const selectionPositionIndex = BlockManager.removeSelectedBlocks();
 
-      Caret.setToBlock(BlockManager.insertDefaultBlockAtIndex(selectionPositionIndex, true), Caret.positions.START);
-
-      /** Clear selection */
-      BlockSelection.clearSelection(event);
-
-      /**
-       * Stop propagations
-       * Manipulation with BlockSelections is handled in global backspacePress because they may occur
-       * with CMD+A or RectangleSelection and they can be handled on document event
-       */
-      event.preventDefault();
-      event.stopPropagation();
-      event.stopImmediatePropagation();
+      BlockManager.insertDefaultBlockAtIndex(selectionPositionIndex, true).then(block => {
+        Caret.setToBlock(block, Caret.positions.START);
+
+        /** Clear selection */
+        BlockSelection.clearSelection(event);
+
+        /**
+         * Stop propagations
+         * Manipulation with BlockSelections is handled in global backspacePress because they may occur
+         * with CMD+A or RectangleSelection and they can be handled on document event
+         */
+        event.preventDefault();
+        event.stopPropagation();
+        event.stopImmediatePropagation();
+      });
     }
   }
 
@@ -596,19 +598,19 @@ export default class UI extends Module<UINodes> {
       /**
        * Insert the default typed Block
        */
-      const newBlock = this.Editor.BlockManager.insert();
-
-      this.Editor.Caret.setToBlock(newBlock);
-
-      /**
-       * And highlight
-       */
-      this.Editor.BlockManager.highlightCurrentNode();
-
-      /**
-       * Move toolbar and show plus button because new Block is empty
-       */
-      this.Editor.Toolbar.moveAndOpen(newBlock);
+      this.Editor.BlockManager.insert().then(newBlock => {
+        this.Editor.Caret.setToBlock(newBlock);
+
+        /**
+         * And highlight
+         */
+        this.Editor.BlockManager.highlightCurrentNode();
+
+        /**
+         * Move toolbar and show plus button because new Block is empty
+         */
+        this.Editor.Toolbar.moveAndOpen(newBlock);
+      });
     }
 
     this.Editor.BlockSelection.clearSelection(event);
diff --git a/src/components/ui/toolbox.ts b/src/components/ui/toolbox.ts
index ad4e84147..a364129cc 100644
--- a/src/components/ui/toolbox.ts
+++ b/src/components/ui/toolbox.ts
@@ -379,7 +379,7 @@ export default class Toolbox extends EventsDispatcher<ToolboxEvent> {
    * @param {string} toolName - Tool name
    * @param blockDataOverrides - predefined Block data
    */
-  private insertNewBlock(toolName: string, blockDataOverrides?: BlockToolData): void {
+  private async insertNewBlock(toolName: string, blockDataOverrides?: BlockToolData): Promise<void> {
     const currentBlockIndex = this.api.blocks.getCurrentBlockIndex();
     const currentBlock = this.api.blocks.getBlockByIndex(currentBlockIndex);
 
@@ -393,7 +393,7 @@ export default class Toolbox extends EventsDispatcher<ToolboxEvent> {
      */
     const index = currentBlock.isEmpty ? currentBlockIndex : currentBlockIndex + 1;
 
-    const newBlock = this.api.blocks.insert(
+    const newBlock = await this.api.blocks.insert(
       toolName,
       blockDataOverrides,
       undefined,
diff --git a/test/cypress/tests/api/blocks.spec.ts b/test/cypress/tests/api/blocks.spec.ts
index 7eb748698..a51119261 100644
--- a/test/cypress/tests/api/blocks.spec.ts
+++ b/test/cypress/tests/api/blocks.spec.ts
@@ -65,8 +65,7 @@ describe('api.blocks', () => {
         const newBlockData = {
           text: 'Updated text',
         };
-
-        editor.blocks.update(idToUpdate, newBlockData);
+        await editor.blocks.update(idToUpdate, newBlockData);
 
         cy.get('[data-cy=editorjs]')
           .get('div.ce-block')
@@ -86,12 +85,10 @@ describe('api.blocks', () => {
         const newBlockData = {
           text: 'Updated text',
         };
-
-        editor.blocks.update(idToUpdate, newBlockData);
+        await editor.blocks.update(idToUpdate, newBlockData);
 
         const output = await (editor as any).save();
         const text = output.blocks[0].data.text;
-
         expect(text).to.be.eq(newBlockData.text);
       });
     });
diff --git a/types/api/blocks.d.ts b/types/api/blocks.d.ts
index bd7ca41d9..b94e0d730 100644
--- a/types/api/blocks.d.ts
+++ b/types/api/blocks.d.ts
@@ -110,7 +110,7 @@ export interface Blocks {
     index?: number,
     needToFocus?: boolean,
     replace?: boolean,
-  ): BlockAPI;
+  ): Promise<BlockAPI>;
 
 
   /**
@@ -119,5 +119,5 @@ export interface Blocks {
    * @param id - id of the block to update
    * @param data - the new data
    */
-  update(id: string, data: BlockToolData): void;
+  update(id: string, data: BlockToolData): Promise<void>;
 }