diff --git a/package.json b/package.json
index a3fbf917..4a6e16bb 100644
--- a/package.json
+++ b/package.json
@@ -119,7 +119,7 @@
     "nock": "^11.0.0",
     "node-fetch": "^2.3.0",
     "npm-run-all": "^4.1.5",
-    "prettier": "1.18.2",
+    "prettier": "^1.19.1",
     "react-test-renderer": "^16.8.4",
     "rimraf": "^3.0.0",
     "simple-git": "^1.124.0",
diff --git a/packages/netlify-cms-backend-github/src/API.js b/packages/netlify-cms-backend-github/src/API.js
index 3833330a..dda46fa4 100644
--- a/packages/netlify-cms-backend-github/src/API.js
+++ b/packages/netlify-cms-backend-github/src/API.js
@@ -627,9 +627,11 @@ export default class API {
       const metadata = await this.retrieveMetadata(contentKey);
       // mark media files to remove
       const metadataMediaFiles = get(metadata, 'objects.files', []);
-      const mediaFilesToRemove = differenceBy(metadataMediaFiles, mediaFilesList, 'path').map(
-        file => ({ ...file, remove: true }),
-      );
+      const mediaFilesToRemove = differenceBy(
+        metadataMediaFiles,
+        mediaFilesList,
+        'path',
+      ).map(file => ({ ...file, remove: true }));
       const branchData = await this.getBranch(branchName);
       const changeTree = await this.updateTree(
         branchData.commit.sha,
diff --git a/packages/netlify-cms-core/src/actions/__tests__/entries.spec.js b/packages/netlify-cms-core/src/actions/__tests__/entries.spec.js
index 136d3fc9..5b3e98f6 100644
--- a/packages/netlify-cms-core/src/actions/__tests__/entries.spec.js
+++ b/packages/netlify-cms-core/src/actions/__tests__/entries.spec.js
@@ -57,7 +57,10 @@ describe('entries', () => {
         {
           name: 'images',
           widget: 'list',
-          fields: [{ name: 'title', widget: 'text' }, { name: 'url', widget: 'text' }],
+          fields: [
+            { name: 'title', widget: 'text' },
+            { name: 'url', widget: 'text' },
+          ],
         },
       ]);
       expect(createEmptyDraftData(fields)).toEqual({});
@@ -95,7 +98,10 @@ describe('entries', () => {
         {
           name: 'post',
           widget: 'object',
-          fields: [{ name: 'title', widget: 'text' }, { name: 'url', widget: 'text' }],
+          fields: [
+            { name: 'title', widget: 'text' },
+            { name: 'url', widget: 'text' },
+          ],
         },
       ]);
       expect(createEmptyDraftData(fields)).toEqual({});
diff --git a/packages/netlify-cms-core/src/backend.js b/packages/netlify-cms-core/src/backend.js
index 02a62dee..b06318b4 100644
--- a/packages/netlify-cms-core/src/backend.js
+++ b/packages/netlify-cms-core/src/backend.js
@@ -407,9 +407,10 @@ export class Backend {
     const { raw, path, mediaFiles = [], assets = [] } = backup;
 
     const label = selectFileEntryLabel(collection, slug);
-    const entry = this.entryWithFormat(collection, slug)(
-      createEntry(collection.get('name'), slug, path, { raw, label }),
-    );
+    const entry = this.entryWithFormat(
+      collection,
+      slug,
+    )(createEntry(collection.get('name'), slug, path, { raw, label }));
 
     return { entry, mediaFiles, assets };
   }
@@ -446,7 +447,10 @@ export class Backend {
     const path = selectEntryPath(collection, slug);
     const label = selectFileEntryLabel(collection, slug);
     return this.implementation.getEntry(collection, slug, path).then(loadedEntry =>
-      this.entryWithFormat(collection, slug)(
+      this.entryWithFormat(
+        collection,
+        slug,
+      )(
         createEntry(collection.get('name'), slug, loadedEntry.file.path, {
           raw: loadedEntry.data,
           label,
diff --git a/packages/netlify-cms-core/src/components/App/App.js b/packages/netlify-cms-core/src/components/App/App.js
index a27b0a16..2a57a5f9 100644
--- a/packages/netlify-cms-core/src/components/App/App.js
+++ b/packages/netlify-cms-core/src/components/App/App.js
@@ -237,9 +237,4 @@ const mapDispatchToProps = {
   logoutUser,
 };
 
-export default hot(module)(
-  connect(
-    mapStateToProps,
-    mapDispatchToProps,
-  )(translate()(App)),
-);
+export default hot(module)(connect(mapStateToProps, mapDispatchToProps)(translate()(App)));
diff --git a/packages/netlify-cms-core/src/components/Collection/Entries/EntriesCollection.js b/packages/netlify-cms-core/src/components/Collection/Entries/EntriesCollection.js
index 9ddb46be..41018e99 100644
--- a/packages/netlify-cms-core/src/components/Collection/Entries/EntriesCollection.js
+++ b/packages/netlify-cms-core/src/components/Collection/Entries/EntriesCollection.js
@@ -83,7 +83,4 @@ const mapDispatchToProps = {
   traverseCollectionCursor: actionTraverseCollectionCursor,
 };
 
-export default connect(
-  mapStateToProps,
-  mapDispatchToProps,
-)(EntriesCollection);
+export default connect(mapStateToProps, mapDispatchToProps)(EntriesCollection);
diff --git a/packages/netlify-cms-core/src/components/Collection/Entries/EntriesSearch.js b/packages/netlify-cms-core/src/components/Collection/Entries/EntriesSearch.js
index 674d29b0..a40e72ef 100644
--- a/packages/netlify-cms-core/src/components/Collection/Entries/EntriesSearch.js
+++ b/packages/netlify-cms-core/src/components/Collection/Entries/EntriesSearch.js
@@ -83,7 +83,4 @@ const mapDispatchToProps = {
   clearSearch: actionClearSearch,
 };
 
-export default connect(
-  mapStateToProps,
-  mapDispatchToProps,
-)(EntriesSearch);
+export default connect(mapStateToProps, mapDispatchToProps)(EntriesSearch);
diff --git a/packages/netlify-cms-core/src/components/Editor/Editor.js b/packages/netlify-cms-core/src/components/Editor/Editor.js
index eb5094c0..71003dce 100644
--- a/packages/netlify-cms-core/src/components/Editor/Editor.js
+++ b/packages/netlify-cms-core/src/components/Editor/Editor.js
@@ -464,26 +464,23 @@ function mapStateToProps(state, ownProps) {
   };
 }
 
-export default connect(
-  mapStateToProps,
-  {
-    changeDraftField,
-    changeDraftFieldValidation,
-    loadEntry,
-    loadEntries,
-    loadDeployPreview,
-    loadLocalBackup,
-    retrieveLocalBackup,
-    persistLocalBackup,
-    deleteLocalBackup,
-    createDraftFromEntry,
-    createEmptyDraft,
-    discardDraft,
-    persistEntry,
-    deleteEntry,
-    updateUnpublishedEntryStatus,
-    publishUnpublishedEntry,
-    deleteUnpublishedEntry,
-    logoutUser,
-  },
-)(withWorkflow(translate()(Editor)));
+export default connect(mapStateToProps, {
+  changeDraftField,
+  changeDraftFieldValidation,
+  loadEntry,
+  loadEntries,
+  loadDeployPreview,
+  loadLocalBackup,
+  retrieveLocalBackup,
+  persistLocalBackup,
+  deleteLocalBackup,
+  createDraftFromEntry,
+  createEmptyDraft,
+  discardDraft,
+  persistEntry,
+  deleteEntry,
+  updateUnpublishedEntryStatus,
+  publishUnpublishedEntry,
+  deleteUnpublishedEntry,
+  logoutUser,
+})(withWorkflow(translate()(Editor)));
diff --git a/packages/netlify-cms-core/src/components/Editor/EditorControlPane/EditorControl.js b/packages/netlify-cms-core/src/components/Editor/EditorControlPane/EditorControl.js
index 81acd968..44ebd8fb 100644
--- a/packages/netlify-cms-core/src/components/Editor/EditorControlPane/EditorControl.js
+++ b/packages/netlify-cms-core/src/components/Editor/EditorControlPane/EditorControl.js
@@ -325,11 +325,8 @@ const mapDispatchToProps = {
   clearFieldErrors,
 };
 
-const ConnectedEditorControl = connect(
-  mapStateToProps,
-  mapDispatchToProps,
-  null,
-  { withRef: false },
-)(translate()(EditorControl));
+const ConnectedEditorControl = connect(mapStateToProps, mapDispatchToProps, null, {
+  withRef: false,
+})(translate()(EditorControl));
 
 export default ConnectedEditorControl;
diff --git a/packages/netlify-cms-core/src/components/MediaLibrary/MediaLibrary.js b/packages/netlify-cms-core/src/components/MediaLibrary/MediaLibrary.js
index 794ad6d7..743a85ff 100644
--- a/packages/netlify-cms-core/src/components/MediaLibrary/MediaLibrary.js
+++ b/packages/netlify-cms-core/src/components/MediaLibrary/MediaLibrary.js
@@ -348,7 +348,4 @@ const mapDispatchToProps = {
   closeMediaLibrary: closeMediaLibraryAction,
 };
 
-export default connect(
-  mapStateToProps,
-  mapDispatchToProps,
-)(translate()(MediaLibrary));
+export default connect(mapStateToProps, mapDispatchToProps)(translate()(MediaLibrary));
diff --git a/packages/netlify-cms-core/src/components/Workflow/Workflow.js b/packages/netlify-cms-core/src/components/Workflow/Workflow.js
index 83fcaa6b..a3bbdec4 100644
--- a/packages/netlify-cms-core/src/components/Workflow/Workflow.js
+++ b/packages/netlify-cms-core/src/components/Workflow/Workflow.js
@@ -156,12 +156,9 @@ function mapStateToProps(state) {
   return returnObj;
 }
 
-export default connect(
-  mapStateToProps,
-  {
-    loadUnpublishedEntries,
-    updateUnpublishedEntryStatus,
-    publishUnpublishedEntry,
-    deleteUnpublishedEntry,
-  },
-)(translate()(Workflow));
+export default connect(mapStateToProps, {
+  loadUnpublishedEntries,
+  updateUnpublishedEntryStatus,
+  publishUnpublishedEntry,
+  deleteUnpublishedEntry,
+})(translate()(Workflow));
diff --git a/packages/netlify-cms-core/src/lib/serializeEntryValues.js b/packages/netlify-cms-core/src/lib/serializeEntryValues.js
index 1b1b4070..dca2a343 100644
--- a/packages/netlify-cms-core/src/lib/serializeEntryValues.js
+++ b/packages/netlify-cms-core/src/lib/serializeEntryValues.js
@@ -35,7 +35,10 @@ const runSerializer = (values, fields, method) => {
 
     // Call recursively for fields within lists
     if (nestedFields && List.isList(value)) {
-      return acc.set(fieldName, value.map(val => runSerializer(val, nestedFields, method)));
+      return acc.set(
+        fieldName,
+        value.map(val => runSerializer(val, nestedFields, method)),
+      );
     }
 
     // Call recursively for fields within objects
diff --git a/packages/netlify-cms-core/src/reducers/__tests__/entries.spec.js b/packages/netlify-cms-core/src/reducers/__tests__/entries.spec.js
index 8ee7e7ab..68205dc2 100644
--- a/packages/netlify-cms-core/src/reducers/__tests__/entries.spec.js
+++ b/packages/netlify-cms-core/src/reducers/__tests__/entries.spec.js
@@ -21,7 +21,10 @@ describe('entries', () => {
   });
 
   it('should handle loaded entries', () => {
-    const entries = [{ slug: 'a', path: '' }, { slug: 'b', title: 'B' }];
+    const entries = [
+      { slug: 'a', path: '' },
+      { slug: 'b', title: 'B' },
+    ];
     expect(
       reducer(initialState, actions.entriesLoaded(Map({ name: 'posts' }), entries, 0)),
     ).toEqual(
diff --git a/packages/netlify-cms-core/src/valueObjects/AssetProxy.js b/packages/netlify-cms-core/src/valueObjects/AssetProxy.js
index 0f655030..97735907 100644
--- a/packages/netlify-cms-core/src/valueObjects/AssetProxy.js
+++ b/packages/netlify-cms-core/src/valueObjects/AssetProxy.js
@@ -51,13 +51,11 @@ export function createAssetProxy(value, fileObj, uploaded = false, privateUpload
         currentBackend(state.config).getToken,
         integration,
       );
-    return provider
-      .upload(fileObj, privateUpload)
-      .then(
-        response =>
-          new AssetProxy(response.asset.url.replace(/^(https?):/, ''), null, true, response.asset),
-        () => new AssetProxy(value, fileObj, false),
-      );
+    return provider.upload(fileObj, privateUpload).then(
+      response =>
+        new AssetProxy(response.asset.url.replace(/^(https?):/, ''), null, true, response.asset),
+      () => new AssetProxy(value, fileObj, false),
+    );
   } else if (privateUpload) {
     throw new Error('The Private Upload option is only available for Asset Store Integration');
   }
diff --git a/packages/netlify-cms-lib-auth/src/implicit-oauth.js b/packages/netlify-cms-lib-auth/src/implicit-oauth.js
index e3f473d0..a4518aea 100644
--- a/packages/netlify-cms-lib-auth/src/implicit-oauth.js
+++ b/packages/netlify-cms-lib-auth/src/implicit-oauth.js
@@ -30,7 +30,8 @@ export default class ImplicitAuthenticator {
       document.location.protocol !== 'https:' &&
       // TODO: Is insecure localhost a bad idea as well? I don't think it is, since you are not actually
       //       sending the token over the internet in this case, assuming the auth URL is secure.
-      (document.location.hostname !== 'localhost' && document.location.hostname !== '127.0.0.1')
+      document.location.hostname !== 'localhost' &&
+      document.location.hostname !== '127.0.0.1'
     ) {
       return cb(new Error('Cannot authenticate over insecure protocol!'));
     }
diff --git a/packages/netlify-cms-widget-markdown/src/MarkdownControl/keys.js b/packages/netlify-cms-widget-markdown/src/MarkdownControl/keys.js
index d1494f39..69fa7f2a 100644
--- a/packages/netlify-cms-widget-markdown/src/MarkdownControl/keys.js
+++ b/packages/netlify-cms-widget-markdown/src/MarkdownControl/keys.js
@@ -38,7 +38,12 @@ function onKeyDown(event, change) {
       .collapseToStartOf(newBlock);
   }
 
-  const marks = [['b', 'bold'], ['i', 'italic'], ['s', 'strikethrough'], ['`', 'code']];
+  const marks = [
+    ['b', 'bold'],
+    ['i', 'italic'],
+    ['s', 'strikethrough'],
+    ['`', 'code'],
+  ];
 
   const [, markName] = marks.find(([key]) => isHotkey(`mod+${key}`, event)) || [];
 
diff --git a/yarn.lock b/yarn.lock
index 23591242..e128619f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -10126,10 +10126,10 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
-prettier@1.18.2:
-  version "1.18.2"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.18.2.tgz#6823e7c5900017b4bd3acf46fe9ac4b4d7bda9ea"
-  integrity sha512-OeHeMc0JhFE9idD4ZdtNibzY0+TPHSpSSb9h8FqtP+YnoZZ1sl8Vc9b1sasjfymH3SonAF4QcA2+mzHPhMvIiw==
+prettier@^1.19.1:
+  version "1.19.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.1.tgz#f7d7f5ff8a9cd872a7be4ca142095956a60797cb"
+  integrity sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==
 
 pretty-format@^24.0.0, pretty-format@^24.3.0, pretty-format@^24.7.0, pretty-format@^24.9.0:
   version "24.9.0"