diff --git a/src/action/index.ts b/src/action/index.ts
index 6b68291..0d00ef7 100644
--- a/src/action/index.ts
+++ b/src/action/index.ts
@@ -49,6 +49,7 @@ export { SetUserDisableLimitsUntilAction } from './setuserdisablelimitsuntil'
 export { SetUserTimezoneAction } from './setusertimezone'
 export { SignOutAtDeviceAction } from './signoutatdevice'
 export { TriedDisablingDeviceAdminAction } from './trieddisablingdeviceadmin'
+export { UpdateCategoryBlockAllNotificationsAction } from './updatecategoryblockallnotifications'
 export { UpdateCategoryBlockedTimesAction } from './updatecategoryblockedtimes'
 export { UpdateCategoryTemporarilyBlockedAction } from './updatecategorytemporarilyblocked'
 export { UpdateCategoryTitleAction } from './updatecategorytitle'
diff --git a/src/action/serialization/parentaction.ts b/src/action/serialization/parentaction.ts
index ff156da..228e5e2 100644
--- a/src/action/serialization/parentaction.ts
+++ b/src/action/serialization/parentaction.ts
@@ -41,6 +41,7 @@ import { SerializedSetRelaxPrimaryDeviceAction, SetRelaxPrimaryDeviceAction } fr
 import { SerializedSetSendDeviceConnected, SetSendDeviceConnected } from '../setsenddeviceconnected'
 import { SerializedSetUserDisableLimitsUntilAction, SetUserDisableLimitsUntilAction } from '../setuserdisablelimitsuntil'
 import { SerializedSetUserTimezoneAction, SetUserTimezoneAction } from '../setusertimezone'
+import { SerializedUpdateCategoryBlockAllNotificationsAction, UpdateCategoryBlockAllNotificationsAction } from '../updatecategoryblockallnotifications'
 import { SerializedUpdateCategoryBlockedTimesAction, UpdateCategoryBlockedTimesAction } from '../updatecategoryblockedtimes'
 import { SerializedUpdateCategoryTemporarilyBlockedAction, UpdateCategoryTemporarilyBlockedAction } from '../updatecategorytemporarilyblocked'
 import { SerializedUpdateCategoryTitleAction, UpdateCategoryTitleAction } from '../updatecategorytitle'
@@ -75,6 +76,7 @@ export type SerializedParentAction =
   SerializedSetSendDeviceConnected |
   SerializedSetUserDisableLimitsUntilAction |
   SerializedSetUserTimezoneAction |
+  SerializedUpdateCategoryBlockAllNotificationsAction |
   SerializedUpdateCategoryBlockedTimesAction |
   SerializedUpdateCategoryTemporarilyBlockedAction |
   SerializedUpdateCategoryTitleAction |
@@ -134,6 +136,8 @@ export const parseParentAction = (action: SerializedParentAction): ParentAction
     return SetUserDisableLimitsUntilAction.parse(action)
   } else if (action.type === 'SET_USER_TIMEZONE') {
     return SetUserTimezoneAction.parse(action)
+  } else if (action.type === 'UPDATE_CATEGORY_BLOCK_ALL_NOTIFICATIONS') {
+    return UpdateCategoryBlockAllNotificationsAction.parse(action)
   } else if (action.type === 'UPDATE_CATEGORY_BLOCKED_TIMES') {
     return UpdateCategoryBlockedTimesAction.parse(action)
   } else if (action.type === 'UPDATE_CATEGORY_TITLE') {
diff --git a/src/action/updatecategoryblockallnotifications.ts b/src/action/updatecategoryblockallnotifications.ts
new file mode 100644
index 0000000..3cbb558
--- /dev/null
+++ b/src/action/updatecategoryblockallnotifications.ts
@@ -0,0 +1,49 @@
+/*
+ * server component for the TimeLimit App
+ * Copyright (C) 2019 Jonas Lochmann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import { assertIdWithinFamily } from '../util/token'
+import { ParentAction } from './basetypes'
+
+export class UpdateCategoryBlockAllNotificationsAction extends ParentAction {
+  readonly categoryId: string
+  readonly blocked: boolean
+
+  constructor ({ categoryId, blocked }: {categoryId: string, blocked: boolean}) {
+    super()
+
+    assertIdWithinFamily(categoryId)
+
+    this.categoryId = categoryId
+    this.blocked = blocked
+  }
+
+  serialize = (): SerializedUpdateCategoryBlockAllNotificationsAction => ({
+    type: 'UPDATE_CATEGORY_BLOCK_ALL_NOTIFICATIONS',
+    categoryId: this.categoryId,
+    blocked: this.blocked
+  })
+
+  static parse = ({ categoryId, blocked }: SerializedUpdateCategoryBlockAllNotificationsAction) => (
+    new UpdateCategoryBlockAllNotificationsAction({ categoryId, blocked })
+  )
+}
+
+export interface SerializedUpdateCategoryBlockAllNotificationsAction {
+  type: 'UPDATE_CATEGORY_BLOCK_ALL_NOTIFICATIONS'
+  categoryId: string
+  blocked: boolean
+}
diff --git a/src/api/validator.ts b/src/api/validator.ts
index 7b2a808..be24725 100644
--- a/src/api/validator.ts
+++ b/src/api/validator.ts
@@ -740,6 +740,29 @@ const definitions = {
       "userId"
     ]
   },
+  "SerializedUpdateCategoryBlockAllNotificationsAction": {
+    "type": "object",
+    "properties": {
+      "type": {
+        "type": "string",
+        "enum": [
+          "UPDATE_CATEGORY_BLOCK_ALL_NOTIFICATIONS"
+        ]
+      },
+      "categoryId": {
+        "type": "string"
+      },
+      "blocked": {
+        "type": "boolean"
+      }
+    },
+    "additionalProperties": false,
+    "required": [
+      "blocked",
+      "categoryId",
+      "type"
+    ]
+  },
   "SerializedUpdateCategoryBlockedTimesAction": {
     "type": "object",
     "properties": {
@@ -1424,6 +1447,9 @@ export const isSerializedParentAction: (value: object) => value is SerializedPar
     {
       "$ref": "#/definitions/SerializedSetUserTimezoneAction"
     },
+    {
+      "$ref": "#/definitions/SerializedUpdateCategoryBlockAllNotificationsAction"
+    },
     {
       "$ref": "#/definitions/SerializedUpdateCategoryBlockedTimesAction"
     },
diff --git a/src/function/sync/apply-actions/dispatch-parent-action/index.ts b/src/function/sync/apply-actions/dispatch-parent-action/index.ts
index cfb3fb0..c0869da 100644
--- a/src/function/sync/apply-actions/dispatch-parent-action/index.ts
+++ b/src/function/sync/apply-actions/dispatch-parent-action/index.ts
@@ -42,6 +42,7 @@ import {
   SetSendDeviceConnected,
   SetUserDisableLimitsUntilAction,
   SetUserTimezoneAction,
+  UpdateCategoryBlockAllNotificationsAction,
   UpdateCategoryBlockedTimesAction,
   UpdateCategoryTemporarilyBlockedAction,
   UpdateCategoryTitleAction,
@@ -76,6 +77,7 @@ import { dispatchSetRelaxPrimaryDevice } from './setrelaxprimarydevice'
 import { dispatchSetSendDeviceConnected } from './setsenddeviceconnected'
 import { dispatchUserSetDisableLimitsUntil } from './setuserdisablelmitsuntil'
 import { dispatchSetUserTimezone } from './setusertimezone'
+import { dispatchUpdateCategoryBlockAllNotifications } from './updatecategoryblockallnotifications'
 import { dispatchUpdateCategoryBlockedTimes } from './updatecategoryblockedtimes'
 import { dispatchUpdateCategoryTemporarilyBlocked } from './updatecategorytemporarilyblocked'
 import { dispatchUpdateCategoryTitle } from './updatecategorytitle'
@@ -130,6 +132,8 @@ export const dispatchParentAction = async ({ action, cache, parentUserId, source
     await dispatchUserSetDisableLimitsUntil({ action, cache })
   } else if (action instanceof SetUserTimezoneAction) {
     await dispatchSetUserTimezone({ action, cache })
+  } else if (action instanceof UpdateCategoryBlockAllNotificationsAction) {
+    await dispatchUpdateCategoryBlockAllNotifications({ action, cache })
   } else if (action instanceof UpdateCategoryBlockedTimesAction) {
     await dispatchUpdateCategoryBlockedTimes({ action, cache })
   } else if (action instanceof IncrementCategoryExtraTimeAction) {
diff --git a/src/function/sync/apply-actions/dispatch-parent-action/updatecategoryblockallnotifications.ts b/src/function/sync/apply-actions/dispatch-parent-action/updatecategoryblockallnotifications.ts
new file mode 100644
index 0000000..542dd41
--- /dev/null
+++ b/src/function/sync/apply-actions/dispatch-parent-action/updatecategoryblockallnotifications.ts
@@ -0,0 +1,39 @@
+/*
+ * server component for the TimeLimit App
+ * Copyright (C) 2019 Jonas Lochmann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import { UpdateCategoryBlockAllNotificationsAction } from '../../../../action'
+import { Cache } from '../cache'
+
+export async function dispatchUpdateCategoryBlockAllNotifications ({ action, cache }: {
+  action: UpdateCategoryBlockAllNotificationsAction
+  cache: Cache
+}) {
+  const [affectedRows] = await cache.database.category.update({
+    blockAllNotifications: action.blocked
+  }, {
+    where: {
+      familyId: cache.familyId,
+      categoryId: action.categoryId
+    },
+    transaction: cache.transaction
+  })
+
+  if (affectedRows !== 0) {
+    cache.categoriesWithModifiedBaseData.push(action.categoryId)
+    cache.areChangesImportant = true
+  }
+}