diff --git a/packages/backend/src/controllers/api/v1/connections/update-connection.js b/packages/backend/src/controllers/api/v1/connections/update-connection.js
new file mode 100644
index 00000000..540d6679
--- /dev/null
+++ b/packages/backend/src/controllers/api/v1/connections/update-connection.js
@@ -0,0 +1,19 @@
+import { renderObject } from '../../../../helpers/renderer.js';
+
+export default async (request, response) => {
+  let connection = await request.currentUser
+    .$relatedQuery('connections')
+    .findOne({
+      id: request.params.connectionId,
+    })
+    .throwIfNotFound();
+
+  connection = await connection.update(connectionParams(request));
+
+  renderObject(response, connection);
+};
+
+const connectionParams = (request) => {
+  const { formattedData, appAuthClientId } = request.body;
+  return { formattedData, appAuthClientId };
+};
diff --git a/packages/backend/src/controllers/api/v1/connections/update-connection.test.js b/packages/backend/src/controllers/api/v1/connections/update-connection.test.js
new file mode 100644
index 00000000..988da4fa
--- /dev/null
+++ b/packages/backend/src/controllers/api/v1/connections/update-connection.test.js
@@ -0,0 +1,117 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import request from 'supertest';
+import Crypto from 'crypto';
+import app from '../../../../app.js';
+import createAuthTokenByUserId from '../../../../helpers/create-auth-token-by-user-id.js';
+import { createUser } from '../../../../../test/factories/user.js';
+import { createConnection } from '../../../../../test/factories/connection.js';
+import { createPermission } from '../../../../../test/factories/permission.js';
+import updateConnectionMock from '../../../../../test/mocks/rest/api/v1/connections/update-connection.js';
+
+describe('PATCH /api/v1/connections/:connectionId', () => {
+  let currentUser, currentUserRole, token;
+
+  beforeEach(async () => {
+    currentUser = await createUser();
+    currentUserRole = await currentUser.$relatedQuery('role');
+
+    token = await createAuthTokenByUserId(currentUser.id);
+  });
+
+  it('should update the connection with valid data for current user', async () => {
+    const connectionData = {
+      userId: currentUser.id,
+      key: 'deepl',
+      verified: true,
+      formattedData: {
+        screenName: 'Connection name',
+        clientSecret: 'secret',
+        clientId: 'id',
+        token: 'token',
+      },
+    };
+
+    const currentUserConnection = await createConnection(connectionData);
+
+    await createPermission({
+      action: 'update',
+      subject: 'Connection',
+      roleId: currentUserRole.id,
+      conditions: ['isCreator'],
+    });
+
+    const response = await request(app)
+      .patch(`/api/v1/connections/${currentUserConnection.id}`)
+      .set('Authorization', token)
+      .send({
+        formattedData: {
+          screenName: 'New connection name',
+          clientSecret: 'new secret',
+          clientId: 'new id',
+          token: 'new token',
+        },
+      })
+      .expect(200);
+
+    const refetchedCurrentUserConnection = await currentUserConnection.$query();
+
+    const expectedPayload = updateConnectionMock({
+      ...refetchedCurrentUserConnection,
+      reconnectable: refetchedCurrentUserConnection.reconnectable,
+    });
+
+    expect(response.body).toStrictEqual(expectedPayload);
+  });
+
+  it('should return not found response for another user', async () => {
+    const anotherUser = await createUser();
+
+    const anotherUserConnection = await createConnection({
+      userId: anotherUser.id,
+      key: 'deepl',
+      verified: true,
+    });
+
+    await createPermission({
+      action: 'update',
+      subject: 'Connection',
+      roleId: currentUserRole.id,
+      conditions: [],
+    });
+
+    await request(app)
+      .patch(`/api/v1/connections/${anotherUserConnection.id}`)
+      .set('Authorization', token)
+      .expect(404);
+  });
+
+  it('should return not found response for not existing connection UUID', async () => {
+    const notExistingConnectionUUID = Crypto.randomUUID();
+
+    await createPermission({
+      action: 'update',
+      subject: 'Connection',
+      roleId: currentUserRole.id,
+      conditions: ['isCreator'],
+    });
+
+    await request(app)
+      .patch(`/api/v1/connections/${notExistingConnectionUUID}`)
+      .set('Authorization', token)
+      .expect(404);
+  });
+
+  it('should return bad request response for invalid UUID', async () => {
+    await createPermission({
+      action: 'update',
+      subject: 'Connection',
+      roleId: currentUserRole.id,
+      conditions: ['isCreator'],
+    });
+
+    await request(app)
+      .patch('/api/v1/connections/invalidConnectionUUID')
+      .set('Authorization', token)
+      .expect(400);
+  });
+});
diff --git a/packages/backend/src/helpers/authorization.js b/packages/backend/src/helpers/authorization.js
index 67b1e305..95cd3f0c 100644
--- a/packages/backend/src/helpers/authorization.js
+++ b/packages/backend/src/helpers/authorization.js
@@ -85,6 +85,10 @@ const authorizationList = {
     action: 'update',
     subject: 'Flow',
   },
+  'PATCH /api/v1/connections/:connectionId': {
+    action: 'update',
+    subject: 'Connection',
+  },
   'DELETE /api/v1/connections/:connectionId': {
     action: 'delete',
     subject: 'Connection',
diff --git a/packages/backend/src/models/connection.js b/packages/backend/src/models/connection.js
index aa1f5dd6..26d139e7 100644
--- a/packages/backend/src/models/connection.js
+++ b/packages/backend/src/models/connection.js
@@ -261,6 +261,23 @@ class Connection extends Base {
 
     return updatedConnection;
   }
+
+  async update({ formattedData, appAuthClientId }) {
+    if (appAuthClientId) {
+      const appAuthClient = await AppAuthClient.query()
+        .findById(appAuthClientId)
+        .throwIfNotFound();
+
+      formattedData = appAuthClient.formattedAuthDefaults;
+    }
+
+    return await this.$query().patchAndFetch({
+      formattedData: {
+        ...this.formattedData,
+        ...formattedData,
+      },
+    });
+  }
 }
 
 export default Connection;
diff --git a/packages/backend/src/routes/api/v1/connections.js b/packages/backend/src/routes/api/v1/connections.js
index 458e9b53..16e7f738 100644
--- a/packages/backend/src/routes/api/v1/connections.js
+++ b/packages/backend/src/routes/api/v1/connections.js
@@ -5,6 +5,7 @@ import getFlowsAction from '../../../controllers/api/v1/connections/get-flows.js
 import testConnectionAction from '../../../controllers/api/v1/connections/test-connection.js';
 import verifyConnectionAction from '../../../controllers/api/v1/connections/verify-connection.js';
 import deleteConnectionAction from '../../../controllers/api/v1/connections/delete-connection.js';
+import updateConnectionAction from '../../../controllers/api/v1/connections/update-connection.js';
 import generateAuthUrlAction from '../../../controllers/api/v1/connections/generate-auth-url.js';
 import resetConnectionAction from '../../../controllers/api/v1/connections/reset-connection.js';
 
@@ -17,6 +18,13 @@ router.delete(
   deleteConnectionAction
 );
 
+router.patch(
+  '/:connectionId',
+  authenticateUser,
+  authorizeUser,
+  updateConnectionAction
+);
+
 router.get(
   '/:connectionId/flows',
   authenticateUser,
diff --git a/packages/backend/test/mocks/rest/api/v1/connections/update-connection.js b/packages/backend/test/mocks/rest/api/v1/connections/update-connection.js
new file mode 100644
index 00000000..b059d27e
--- /dev/null
+++ b/packages/backend/test/mocks/rest/api/v1/connections/update-connection.js
@@ -0,0 +1,27 @@
+const updateConnectionMock = (connection) => {
+  const data = {
+    id: connection.id,
+    key: connection.key,
+    verified: connection.verified,
+    reconnectable: connection.reconnectable,
+    appAuthClientId: connection.appAuthClientId,
+    formattedData: {
+      screenName: connection.formattedData.screenName,
+    },
+    createdAt: connection.createdAt.getTime(),
+    updatedAt: connection.updatedAt.getTime(),
+  };
+
+  return {
+    data: data,
+    meta: {
+      count: 1,
+      currentPage: null,
+      isArray: false,
+      totalPages: null,
+      type: 'Connection',
+    },
+  };
+};
+
+export default updateConnectionMock;