diff --git a/dev_mode/imports.css b/dev_mode/imports.css
index 944d9544df5e..23245db59d7a 100644
--- a/dev_mode/imports.css
+++ b/dev_mode/imports.css
@@ -35,5 +35,4 @@
@import url('~@jupyterlab/tooltip-extension/style/index.css');
@import url('~@jupyterlab/ui-components-extension/style/index.css');
@import url('~@jupyterlab/vdom-extension/style/index.css');
-@import url('~@jupyterlab/vega4-extension/style/index.css');
@import url('~@jupyterlab/vega5-extension/style/index.css');
diff --git a/packages/docregistry/package.json b/packages/docregistry/package.json
index 5a76ad5bf2cd..41e7a9d6d2bf 100644
--- a/packages/docregistry/package.json
+++ b/packages/docregistry/package.json
@@ -43,7 +43,7 @@
"@jupyterlab/rendermime": "^2.0.0-alpha.4",
"@jupyterlab/rendermime-interfaces": "^2.0.0-alpha.4",
"@jupyterlab/services": "^5.0.0-alpha.4",
- "@jupyterlab/ui-components': "^2.0.0-alpha.4",
+ "@jupyterlab/ui-components": "^2.0.0-alpha.4",
"@lumino/algorithm": "^1.2.1",
"@lumino/coreutils": "^1.4.0",
"@lumino/disposable": "^1.3.2",
diff --git a/packages/ui-components/src/icon/iconimports.ts b/packages/ui-components/src/icon/iconimports.ts
index 2779a19751e4..d34a9f8f02f0 100644
--- a/packages/ui-components/src/icon/iconimports.ts
+++ b/packages/ui-components/src/icon/iconimports.ts
@@ -109,10 +109,12 @@ export const jupyterFaviconIcon = new JLIcon(
);
export const kernelIcon = new JLIcon('kernelIcon', kernelSvg);
export const lineFormIcon = new JLIcon('lineFormIcon', lineFormSvg);
+export const listIcon = new JLIcon('listIcon', listSvg);
export const notTrustedIcon = new JLIcon('notTrustedIcon', notTrustedSvg);
export const terminalIcon = new JLIcon('terminalIcon', terminalSvg);
export const trustedIcon = new JLIcon('trustedIcon', trustedSvg);
export const addIcon = new JLIcon('addIcon', addSvg);
+export const checkIcon = new JLIcon('checkIcon', checkSvg);
export const copyIcon = new JLIcon('copyIcon', copySvg);
export const cutIcon = new JLIcon('cutIcon', cutSvg);
export const pasteIcon = new JLIcon('pasteIcon', pasteSvg);
diff --git a/packages/ui-components/style/icons/toolbar/check.svg b/packages/ui-components/style/icons/toolbar/check.svg
index 60af68f52500..4f0432fc8928 100644
--- a/packages/ui-components/style/icons/toolbar/check.svg
+++ b/packages/ui-components/style/icons/toolbar/check.svg
@@ -1,5 +1,5 @@
\ No newline at end of file
+
+
+
+