diff --git a/backend/src/graphql/resolvers/UserResolver.ts b/backend/src/graphql/resolvers/UserResolver.ts
index 7e618cf42..93172875c 100644
--- a/backend/src/graphql/resolvers/UserResolver.ts
+++ b/backend/src/graphql/resolvers/UserResolver.ts
@@ -1,7 +1,7 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
-import { Resolver, Query, Args, Arg, Authorized, Ctx, UseMiddleware } from 'type-graphql'
+import { Resolver, Query, Args, Arg, Authorized, Ctx, UseMiddleware, Mutation } from 'type-graphql'
 import CONFIG from '../../config'
 import { CheckUsernameResponse } from '../models/CheckUsernameResponse'
 import { LoginViaVerificationCode } from '../models/LoginViaVerificationCode'
@@ -104,7 +104,7 @@ export class UserResolver {
     return new SendPasswordResetEmailResponse(response.data)
   }
 
-  @Query(() => String)
+  @Mutation(() => String)
   async resetPassword(
     @Args()
     { sessionId, email, password }: ChangePasswordArgs,
@@ -122,7 +122,7 @@ export class UserResolver {
   }
 
   @Authorized()
-  @Query(() => UpdateUserInfosResponse)
+  @Mutation(() => UpdateUserInfosResponse)
   async updateUserInfos(
     @Args()
     {
diff --git a/frontend/src/components/LanguageSwitch.spec.js b/frontend/src/components/LanguageSwitch.spec.js
index afe98b357..dc76d854b 100644
--- a/frontend/src/components/LanguageSwitch.spec.js
+++ b/frontend/src/components/LanguageSwitch.spec.js
@@ -3,7 +3,7 @@ import LanguageSwitch from './LanguageSwitch'
 
 const localVue = global.localVue
 
-const updateUserInfosQueryMock = jest.fn().mockResolvedValue({
+const updateUserInfosMutationMock = jest.fn().mockResolvedValue({
   data: {
     updateUserInfos: {
       validValues: 1,
@@ -28,7 +28,7 @@ describe('LanguageSwitch', () => {
       locale: 'en',
     },
     $apollo: {
-      query: updateUserInfosQueryMock,
+      mutate: updateUserInfosMutationMock,
     },
   }
 
@@ -119,7 +119,7 @@ describe('LanguageSwitch', () => {
     describe('calls the API', () => {
       it("with locale 'en'", () => {
         wrapper.findAll('li').at(0).find('a').trigger('click')
-        expect(updateUserInfosQueryMock).toBeCalledWith(
+        expect(updateUserInfosMutationMock).toBeCalledWith(
           expect.objectContaining({
             variables: {
               email: 'he@ho.he',
@@ -131,7 +131,7 @@ describe('LanguageSwitch', () => {
 
       it("with locale 'de'", () => {
         wrapper.findAll('li').at(1).find('a').trigger('click')
-        expect(updateUserInfosQueryMock).toBeCalledWith(
+        expect(updateUserInfosMutationMock).toBeCalledWith(
           expect.objectContaining({
             variables: {
               email: 'he@ho.he',
diff --git a/frontend/src/components/LanguageSwitch.vue b/frontend/src/components/LanguageSwitch.vue
index f0528a935..14894e46e 100644
--- a/frontend/src/components/LanguageSwitch.vue
+++ b/frontend/src/components/LanguageSwitch.vue
@@ -14,7 +14,7 @@
 <script>
 import { localeChanged } from 'vee-validate'
 import locales from '../locales/'
-import { updateUserInfos } from '../graphql/queries'
+import { updateUserInfos } from '../graphql/mutations'
 
 export default {
   name: 'LanguageSwitch',
@@ -36,8 +36,8 @@ export default {
       this.setLocale(locale)
       if (this.$store.state.email) {
         this.$apollo
-          .query({
-            query: updateUserInfos,
+          .mutate({
+            mutation: updateUserInfos,
             variables: {
               email: this.$store.state.email,
               locale: locale,
diff --git a/frontend/src/graphql/mutations.js b/frontend/src/graphql/mutations.js
index a5ef1702c..75bfa8775 100644
--- a/frontend/src/graphql/mutations.js
+++ b/frontend/src/graphql/mutations.js
@@ -11,3 +11,35 @@ export const unsubscribeNewsletter = gql`
     unsubscribeNewsletter(email: $email)
   }
 `
+
+export const resetPassword = gql`
+  mutation($sessionId: Float!, $email: String!, $password: String!) {
+    resetPassword(sessionId: $sessionId, email: $email, password: $password)
+  }
+`
+
+export const updateUserInfos = gql`
+  query(
+    $email: String!
+    $firstName: String
+    $lastName: String
+    $description: String
+    $username: String
+    $password: String
+    $passwordNew: String
+    $locale: String
+  ) {
+    updateUserInfos(
+      email: $email
+      firstName: $firstName
+      lastName: $lastName
+      description: $description
+      username: $username
+      password: $password
+      passwordNew: $passwordNew
+      language: $locale
+    ) {
+      validValues
+    }
+  }
+`
diff --git a/frontend/src/graphql/queries.js b/frontend/src/graphql/queries.js
index 75039095f..6d4ffd783 100644
--- a/frontend/src/graphql/queries.js
+++ b/frontend/src/graphql/queries.js
@@ -22,12 +22,6 @@ export const logout = gql`
   }
 `
 
-export const resetPassword = gql`
-  query($sessionId: Float!, $email: String!, $password: String!) {
-    resetPassword(sessionId: $sessionId, email: $email, password: $password)
-  }
-`
-
 export const loginViaEmailVerificationCode = gql`
   query($optin: String!) {
     loginViaEmailVerificationCode(optin: $optin) {
@@ -37,32 +31,6 @@ export const loginViaEmailVerificationCode = gql`
   }
 `
 
-export const updateUserInfos = gql`
-  query(
-    $email: String!
-    $firstName: String
-    $lastName: String
-    $description: String
-    $username: String
-    $password: String
-    $passwordNew: String
-    $locale: String
-  ) {
-    updateUserInfos(
-      email: $email
-      firstName: $firstName
-      lastName: $lastName
-      description: $description
-      username: $username
-      password: $password
-      passwordNew: $passwordNew
-      language: $locale
-    ) {
-      validValues
-    }
-  }
-`
-
 export const transactionsQuery = gql`
   query($firstPage: Int = 1, $items: Int = 25, $order: String = "DESC") {
     transactionList(firstPage: $firstPage, items: $items, order: $order) {
diff --git a/frontend/src/views/Pages/ResetPassword.spec.js b/frontend/src/views/Pages/ResetPassword.spec.js
index 9f3830a55..87198ba62 100644
--- a/frontend/src/views/Pages/ResetPassword.spec.js
+++ b/frontend/src/views/Pages/ResetPassword.spec.js
@@ -7,6 +7,7 @@ import flushPromises from 'flush-promises'
 const localVue = global.localVue
 
 const apolloQueryMock = jest.fn().mockRejectedValue({ message: 'error' })
+const apolloMutationMock = jest.fn()
 
 const toasterMock = jest.fn()
 const routerPushMock = jest.fn()
@@ -36,6 +37,7 @@ describe('ResetPassword', () => {
       }),
     },
     $apollo: {
+      mutate: apolloMutationMock,
       query: apolloQueryMock,
     },
   }
@@ -146,7 +148,7 @@ describe('ResetPassword', () => {
 
         describe('server response with error', () => {
           beforeEach(() => {
-            apolloQueryMock.mockRejectedValue({ message: 'error' })
+            apolloMutationMock.mockRejectedValue({ message: 'error' })
           })
           it('toasts an error message', () => {
             expect(toasterMock).toHaveBeenCalledWith('error')
@@ -155,14 +157,14 @@ describe('ResetPassword', () => {
 
         describe('server response with success', () => {
           beforeEach(() => {
-            apolloQueryMock.mockResolvedValue({
+            apolloMutationMock.mockResolvedValue({
               data: {
                 resetPassword: 'success',
               },
             })
           })
           it('calls the API', () => {
-            expect(apolloQueryMock).toBeCalledWith(
+            expect(apolloMutationMock).toBeCalledWith(
               expect.objectContaining({
                 variables: {
                   sessionId: 1,
diff --git a/frontend/src/views/Pages/ResetPassword.vue b/frontend/src/views/Pages/ResetPassword.vue
index e93f728b1..a9ca9e6c0 100644
--- a/frontend/src/views/Pages/ResetPassword.vue
+++ b/frontend/src/views/Pages/ResetPassword.vue
@@ -48,7 +48,8 @@
 </template>
 <script>
 import InputPasswordConfirmation from '../../components/Inputs/InputPasswordConfirmation'
-import { resetPassword, loginViaEmailVerificationCode } from '../../graphql/queries'
+import { loginViaEmailVerificationCode } from '../../graphql/queries'
+import { resetPassword } from '../../graphql/mutations'
 
 export default {
   name: 'ResetPassword',
@@ -71,8 +72,8 @@ export default {
   methods: {
     async onSubmit() {
       this.$apollo
-        .query({
-          query: resetPassword,
+        .mutate({
+          mutation: resetPassword,
           variables: {
             sessionId: this.sessionId,
             email: this.email,
diff --git a/frontend/src/views/Pages/UserProfile/UserCard_FormUserData.spec.js b/frontend/src/views/Pages/UserProfile/UserCard_FormUserData.spec.js
index b3e014e57..87bb3edb9 100644
--- a/frontend/src/views/Pages/UserProfile/UserCard_FormUserData.spec.js
+++ b/frontend/src/views/Pages/UserProfile/UserCard_FormUserData.spec.js
@@ -29,7 +29,7 @@ describe('UserCard_FormUserData', () => {
       error: toastErrorMock,
     },
     $apollo: {
-      query: mockAPIcall,
+      mutate: mockAPIcall,
     },
   }
 
diff --git a/frontend/src/views/Pages/UserProfile/UserCard_FormUserData.vue b/frontend/src/views/Pages/UserProfile/UserCard_FormUserData.vue
index 55063d270..f7293cdfb 100644
--- a/frontend/src/views/Pages/UserProfile/UserCard_FormUserData.vue
+++ b/frontend/src/views/Pages/UserProfile/UserCard_FormUserData.vue
@@ -72,7 +72,7 @@
   </b-card>
 </template>
 <script>
-import { updateUserInfos } from '../../../graphql/queries'
+import { updateUserInfos } from '../../../graphql/mutations'
 
 export default {
   name: 'FormUserData',
@@ -108,8 +108,8 @@ export default {
     async onSubmit(event) {
       event.preventDefault()
       this.$apollo
-        .query({
-          query: updateUserInfos,
+        .mutate({
+          mutation: updateUserInfos,
           variables: {
             email: this.$store.state.email,
             firstName: this.form.firstName,
diff --git a/frontend/src/views/Pages/UserProfile/UserCard_FormUserMail.spec.js b/frontend/src/views/Pages/UserProfile/UserCard_FormUserMail.spec.js
index 06f26877a..84836dc91 100644
--- a/frontend/src/views/Pages/UserProfile/UserCard_FormUserMail.spec.js
+++ b/frontend/src/views/Pages/UserProfile/UserCard_FormUserMail.spec.js
@@ -21,7 +21,7 @@ describe('UserCard_FormUserMail', () => {
       },
     },
     $apollo: {
-      query: mockAPIcall,
+      mutate: mockAPIcall,
     },
   }
 
diff --git a/frontend/src/views/Pages/UserProfile/UserCard_FormUserMail.vue b/frontend/src/views/Pages/UserProfile/UserCard_FormUserMail.vue
index ed88425c7..50e0317d1 100644
--- a/frontend/src/views/Pages/UserProfile/UserCard_FormUserMail.vue
+++ b/frontend/src/views/Pages/UserProfile/UserCard_FormUserMail.vue
@@ -32,7 +32,7 @@
   </b-card>
 </template>
 <script>
-import { updateUserInfos } from '../../../graphql/queries'
+import { updateUserInfos } from '../../../graphql/mutations'
 
 export default {
   name: 'FormUserMail',
@@ -45,8 +45,8 @@ export default {
   methods: {
     async onSubmit() {
       this.$apollo
-        .query({
-          query: updateUserInfos,
+        .mutate({
+          mutation: updateUserInfos,
           variables: {
             email: this.$store.state.email,
             newEmail: this.newEmail,
diff --git a/frontend/src/views/Pages/UserProfile/UserCard_FormUserPasswort.spec.js b/frontend/src/views/Pages/UserProfile/UserCard_FormUserPasswort.spec.js
index fa4aceb0c..dcce66b7f 100644
--- a/frontend/src/views/Pages/UserProfile/UserCard_FormUserPasswort.spec.js
+++ b/frontend/src/views/Pages/UserProfile/UserCard_FormUserPasswort.spec.js
@@ -25,7 +25,7 @@ describe('UserCard_FormUserPasswort', () => {
       error: toastErrorMock,
     },
     $apollo: {
-      query: changePasswordProfileMock,
+      mutate: changePasswordProfileMock,
     },
   }
 
diff --git a/frontend/src/views/Pages/UserProfile/UserCard_FormUserPasswort.vue b/frontend/src/views/Pages/UserProfile/UserCard_FormUserPasswort.vue
index f317d3c07..6e47539f5 100644
--- a/frontend/src/views/Pages/UserProfile/UserCard_FormUserPasswort.vue
+++ b/frontend/src/views/Pages/UserProfile/UserCard_FormUserPasswort.vue
@@ -42,7 +42,7 @@
 <script>
 import InputPassword from '../../../components/Inputs/InputPassword'
 import InputPasswordConfirmation from '../../../components/Inputs/InputPasswordConfirmation'
-import { updateUserInfos } from '../../../graphql/queries'
+import { updateUserInfos } from '../../../graphql/mutations'
 
 export default {
   name: 'FormUserPasswort',
@@ -73,8 +73,8 @@ export default {
     },
     async onSubmit() {
       this.$apollo
-        .query({
-          query: updateUserInfos,
+        .mutate({
+          mutations: updateUserInfos,
           variables: {
             email: this.$store.state.email,
             password: this.form.password,
diff --git a/frontend/src/views/Pages/UserProfile/UserCard_FormUsername.spec.js b/frontend/src/views/Pages/UserProfile/UserCard_FormUsername.spec.js
index 8a69ee7eb..1791d326c 100644
--- a/frontend/src/views/Pages/UserProfile/UserCard_FormUsername.spec.js
+++ b/frontend/src/views/Pages/UserProfile/UserCard_FormUsername.spec.js
@@ -35,7 +35,7 @@ describe('UserCard_FormUsername', () => {
       error: toastErrorMock,
     },
     $apollo: {
-      query: mockAPIcall,
+      mutate: mockAPIcall,
     },
   }
 
diff --git a/frontend/src/views/Pages/UserProfile/UserCard_FormUsername.vue b/frontend/src/views/Pages/UserProfile/UserCard_FormUsername.vue
index f6587b968..7c100f41f 100644
--- a/frontend/src/views/Pages/UserProfile/UserCard_FormUsername.vue
+++ b/frontend/src/views/Pages/UserProfile/UserCard_FormUsername.vue
@@ -67,7 +67,7 @@
   </b-card>
 </template>
 <script>
-import { updateUserInfos } from '../../../graphql/queries'
+import { updateUserInfos } from '../../../graphql/mutations'
 
 export default {
   name: 'FormUsername',
@@ -87,8 +87,8 @@ export default {
     },
     async onSubmit() {
       this.$apollo
-        .query({
-          query: updateUserInfos,
+        .mutate({
+          mutation: updateUserInfos,
           variables: {
             email: this.$store.state.email,
             username: this.form.username,
diff --git a/frontend/src/views/Pages/UserProfile/UserCard_Language.spec.js b/frontend/src/views/Pages/UserProfile/UserCard_Language.spec.js
index 6e2c5e277..68d0964d3 100644
--- a/frontend/src/views/Pages/UserProfile/UserCard_Language.spec.js
+++ b/frontend/src/views/Pages/UserProfile/UserCard_Language.spec.js
@@ -25,7 +25,7 @@ describe('UserCard_Language', () => {
       error: toastErrorMock,
     },
     $apollo: {
-      query: mockAPIcall,
+      mutate: mockAPIcall,
     },
   }
 
diff --git a/frontend/src/views/Pages/UserProfile/UserCard_Language.vue b/frontend/src/views/Pages/UserProfile/UserCard_Language.vue
index 7bd02cf4c..412bf714e 100644
--- a/frontend/src/views/Pages/UserProfile/UserCard_Language.vue
+++ b/frontend/src/views/Pages/UserProfile/UserCard_Language.vue
@@ -63,7 +63,7 @@
 </template>
 <script>
 import LanguageSwitchSelect from '../../../components/LanguageSwitchSelect.vue'
-import { updateUserInfos } from '../../../graphql/queries'
+import { updateUserInfos } from '../../../graphql/mutations'
 
 export default {
   name: 'FormUserLanguage',
@@ -90,8 +90,8 @@ export default {
 
     async onSubmit() {
       this.$apollo
-        .query({
-          query: updateUserInfos,
+        .mutate({
+          mutation: updateUserInfos,
           variables: {
             language: this.$store.state.language,
           },