diff --git a/packages/core/src/Extension.ts b/packages/core/src/Extension.ts
index 48d4a0b0..c03f725e 100644
--- a/packages/core/src/Extension.ts
+++ b/packages/core/src/Extension.ts
@@ -352,20 +352,13 @@ export class Extension<Options = any, Storage = any> {
       console.warn(`[tiptap warn]: BREAKING CHANGE: "defaultOptions" is deprecated. Please use "addOptions" instead. Found in extension: "${extension.name}".`)
     }
 
-    // TODO: remove `addOptions` fallback
-    extension.options = extendedConfig.defaultOptions
-      ? extendedConfig.defaultOptions
-      : extension.parent.options
-
-    if (extendedConfig.addOptions) {
-      extension.options = callOrReturn(getExtensionField<AnyConfig['addOptions']>(
-        extension,
-        'addOptions',
-        {
-          name: extension.name,
-        },
-      ))
-    }
+    extension.options = callOrReturn(getExtensionField<AnyConfig['addOptions']>(
+      extension,
+      'addOptions',
+      {
+        name: extension.name,
+      },
+    ))
 
     extension.storage = callOrReturn(getExtensionField<AnyConfig['addStorage']>(
       extension,
diff --git a/packages/core/src/Mark.ts b/packages/core/src/Mark.ts
index 4cd38816..9372f4fc 100644
--- a/packages/core/src/Mark.ts
+++ b/packages/core/src/Mark.ts
@@ -466,20 +466,13 @@ export class Mark<Options = any, Storage = any> {
       console.warn(`[tiptap warn]: BREAKING CHANGE: "defaultOptions" is deprecated. Please use "addOptions" instead. Found in extension: "${extension.name}".`)
     }
 
-    // TODO: remove `addOptions` fallback
-    extension.options = extendedConfig.defaultOptions
-      ? extendedConfig.defaultOptions
-      : extension.parent.options
-
-    if (extendedConfig.addOptions) {
-      extension.options = callOrReturn(getExtensionField<AnyConfig['addOptions']>(
-        extension,
-        'addOptions',
-        {
-          name: extension.name,
-        },
-      ))
-    }
+    extension.options = callOrReturn(getExtensionField<AnyConfig['addOptions']>(
+      extension,
+      'addOptions',
+      {
+        name: extension.name,
+      },
+    ))
 
     extension.storage = callOrReturn(getExtensionField<AnyConfig['addStorage']>(
       extension,
diff --git a/packages/core/src/Node.ts b/packages/core/src/Node.ts
index fe51bd8b..9eaf3499 100644
--- a/packages/core/src/Node.ts
+++ b/packages/core/src/Node.ts
@@ -546,20 +546,13 @@ export class Node<Options = any, Storage = any> {
       console.warn(`[tiptap warn]: BREAKING CHANGE: "defaultOptions" is deprecated. Please use "addOptions" instead. Found in extension: "${extension.name}".`)
     }
 
-    // TODO: remove `addOptions` fallback
-    extension.options = extendedConfig.defaultOptions
-      ? extendedConfig.defaultOptions
-      : extension.parent.options
-
-    if (extendedConfig.addOptions) {
-      extension.options = callOrReturn(getExtensionField<AnyConfig['addOptions']>(
-        extension,
-        'addOptions',
-        {
-          name: extension.name,
-        },
-      ))
-    }
+    extension.options = callOrReturn(getExtensionField<AnyConfig['addOptions']>(
+      extension,
+      'addOptions',
+      {
+        name: extension.name,
+      },
+    ))
 
     extension.storage = callOrReturn(getExtensionField<AnyConfig['addStorage']>(
       extension,
diff --git a/tests/cypress/integration/core/extensionOptions.spec.ts b/tests/cypress/integration/core/extensionOptions.spec.ts
index 46031526..ba911357 100644
--- a/tests/cypress/integration/core/extensionOptions.spec.ts
+++ b/tests/cypress/integration/core/extensionOptions.spec.ts
@@ -3,20 +3,6 @@
 import { Extension } from '@tiptap/core/src/Extension'
 
 describe('extension options', () => {
-  it('should set options (deprecated)', () => {
-    const extension = Extension.create({
-      defaultOptions: {
-        foo: 1,
-        bar: 1,
-      },
-    })
-
-    expect(extension.options).to.deep.eq({
-      foo: 1,
-      bar: 1,
-    })
-  })
-
   it('should set options', () => {
     const extension = Extension.create({
       addOptions() {
@@ -33,23 +19,6 @@ describe('extension options', () => {
     })
   })
 
-  it('should pass through (deprecated)', () => {
-    const extension = Extension
-      .create({
-        defaultOptions: {
-          foo: 1,
-          bar: 1,
-        },
-      })
-      .extend()
-      .configure()
-
-    expect(extension.options).to.deep.eq({
-      foo: 1,
-      bar: 1,
-    })
-  })
-
   it('should pass through', () => {
     const extension = Extension
       .create({
@@ -69,24 +38,6 @@ describe('extension options', () => {
     })
   })
 
-  it('should be configurable (deprecated)', () => {
-    const extension = Extension
-      .create({
-        defaultOptions: {
-          foo: 1,
-          bar: 1,
-        },
-      })
-      .configure({
-        bar: 2,
-      })
-
-    expect(extension.options).to.deep.eq({
-      foo: 1,
-      bar: 2,
-    })
-  })
-
   it('should be configurable', () => {
     const extension = Extension
       .create({
@@ -107,28 +58,6 @@ describe('extension options', () => {
     })
   })
 
-  it('should be extendable (deprecated)', () => {
-    const extension = Extension.create({
-      defaultOptions: {
-        foo: 1,
-        bar: 1,
-      },
-    })
-
-    const newExtension = extension.extend({
-      defaultOptions: {
-        ...extension.options,
-        baz: 1,
-      },
-    })
-
-    expect(newExtension.options).to.deep.eq({
-      foo: 1,
-      bar: 1,
-      baz: 1,
-    })
-  })
-
   it('should be extendable', () => {
     const extension = Extension.create({
       addOptions() {
@@ -155,25 +84,6 @@ describe('extension options', () => {
     })
   })
 
-  it('should be overwritable (deprecated)', () => {
-    const extension = Extension
-      .create({
-        defaultOptions: {
-          foo: 1,
-          bar: 1,
-        },
-      })
-      .extend({
-        defaultOptions: {
-          baz: 1,
-        },
-      })
-
-    expect(extension.options).to.deep.eq({
-      baz: 1,
-    })
-  })
-
   it('should be overwritable', () => {
     const extension = Extension
       .create({
@@ -197,35 +107,6 @@ describe('extension options', () => {
     })
   })
 
-  it('should configure nested objects (deprecated)', () => {
-    const extension = Extension
-      .create<{
-        foo: number[],
-        HTMLAttributes: Record<string, any>,
-      }>({
-        defaultOptions: {
-          foo: [1, 2, 3],
-          HTMLAttributes: {
-            class: 'foo',
-          },
-        },
-      })
-      .configure({
-        foo: [1],
-        HTMLAttributes: {
-          id: 'bar',
-        },
-      })
-
-    expect(extension.options).to.deep.eq({
-      foo: [1],
-      HTMLAttributes: {
-        class: 'foo',
-        id: 'bar',
-      },
-    })
-  })
-
   it('should configure nested objects', () => {
     const extension = Extension
       .create<{
@@ -257,35 +138,6 @@ describe('extension options', () => {
     })
   })
 
-  it('should create its own instance on configure (deprecated)', () => {
-    const extension = Extension
-      .create({
-        defaultOptions: {
-          foo: 1,
-          bar: 2,
-        },
-      })
-
-    const extension1 = extension.configure({
-      foo: 2,
-      bar: 4,
-    })
-
-    const extension2 = extension.configure({
-      foo: 3,
-    })
-
-    expect(extension1.options).to.deep.eq({
-      foo: 2,
-      bar: 4,
-    })
-
-    expect(extension2.options).to.deep.eq({
-      foo: 3,
-      bar: 2,
-    })
-  })
-
   it('should create its own instance on configure', () => {
     const extension = Extension
       .create({