diff --git a/CHANGELOG.md b/CHANGELOG.md
index dbe3700..fec9128 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## v0.4.0 (11/20/21)
+
+- Added `Copy File to Gist` command to the notebook editor toolbar
+- Changed the `Showcase` view to be hidden by default
+
 ## v0.3.0 (07/06/21)
 
 - Fixed a bug with updating notebook files
diff --git a/package.json b/package.json
index 87d47cf..018721f 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "displayName": "GistPad",
   "description": "Manage your code snippets and developer notes using GitHub Gists and repositories.",
   "publisher": "vsls-contrib",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "extensionKind": [
     "ui",
     "workspace"
@@ -127,7 +127,8 @@
       },
       {
         "command": "gistpad.addFileToGist",
-        "title": "Copy File to Gist"
+        "title": "Copy File to Gist",
+        "icon": "$(github)"
       },
       {
         "command": "gistpad.addGistComment",
@@ -1407,6 +1408,11 @@
           "group": "inline",
           "when": "commentController == gistpad:repo && commentThreadIsEmpty && gistpad:state == SignedIn"
         }
+      ],
+      "notebook/toolbar": [
+        {
+          "command": "gistpad.addFileToGist"
+        }
       ]
     },
     "viewsContainers": {
@@ -1431,7 +1437,7 @@
         {
           "id": "gistpad.showcase",
           "name": "Showcase",
-          "visibility": "collapsed",
+          "visibility": "hidden",
           "when": "gistpad:state == SignedIn"
         }
       ]
diff --git a/src/commands/editor.ts b/src/commands/editor.ts
index fb3acd0..c9c18a1 100644
--- a/src/commands/editor.ts
+++ b/src/commands/editor.ts
@@ -95,11 +95,16 @@ export async function promptForGistSelection(files: GistFile[]) {
 }
 
 export function registerEditorCommands(context: ExtensionContext) {
+  // This command can be called from four different contexts:
+  // 1) Right-clicking a file in the "Explorer" tree (Uri)
+  // 2) Right-clicking the editor tab of a file (Uri)
+  // 3) Right-clicking a file in the "Gists" tree (GistFileNode)
+  // 4) From the toolbar of the notebook editor
   context.subscriptions.push(
     commands.registerCommand(
       `${EXTENSION_NAME}.addFileToGist`,
       async (
-        targetNode: GistFileNode | Uri,
+        targetNode: GistFileNode | Uri | { notebookEditor: { notebookUri: Uri }},
         multiSelectNodes?: GistFileNode[] | Uri[]
       ) => {
         await ensureAuthenticated();
@@ -124,12 +129,14 @@ export function registerEditorCommands(context: ExtensionContext) {
               )
             });
           } else {
+            const uri = node instanceof Uri ? node : node.notebookEditor.notebookUri;
+            
             // The command is being called as a response to
             // right-clicking a file node in the explorer
             // and/or right-clicking the editor tab
             files.push({
-              filename: path.basename(node.path),
-              content: byteArrayToString(await workspace.fs.readFile(node))
+              filename: path.basename(uri.path),
+              content: byteArrayToString(await workspace.fs.readFile(uri))
             });
           }
         }