diff --git a/extensions/git/src/actionButton.ts b/extensions/git/src/actionButton.ts
index 311e9dc84d5..84c75067e3e 100644
--- a/extensions/git/src/actionButton.ts
+++ b/extensions/git/src/actionButton.ts
@@ -50,6 +50,8 @@ export class ActionButtonCommand {
 		repository.onDidRunGitStatus(this.onDidRunGitStatus, this, this.disposables);
 		repository.onDidChangeOperations(this.onDidChangeOperations, this, this.disposables);
 
+		this.disposables.push(postCommitCommandsProviderRegistry.onDidChangePostCommitCommandsProviders(() => this._onDidChange.fire()));
+
 		const root = Uri.file(repository.root);
 		this.disposables.push(workspace.onDidChangeConfiguration(e => {
 			if (e.affectsConfiguration('git.enableSmartCommit', root) ||
diff --git a/extensions/git/src/model.ts b/extensions/git/src/model.ts
index 505ceeb16c0..5fc1b4d06ac 100644
--- a/extensions/git/src/model.ts
+++ b/extensions/git/src/model.ts
@@ -108,6 +108,9 @@ export class Model implements IRemoteSourcePublisherRegistry, IPostCommitCommand
 
 	private postCommitCommandsProviders = new Set<PostCommitCommandsProvider>();
 
+	private _onDidChangePostCommitCommandsProviders = new EventEmitter<void>();
+	readonly onDidChangePostCommitCommandsProviders = this._onDidChangePostCommitCommandsProviders.event;
+
 	private showRepoOnHomeDriveRootWarning = true;
 	private pushErrorHandlers = new Set<PushErrorHandler>();
 
@@ -591,8 +594,12 @@ export class Model implements IRemoteSourcePublisherRegistry, IPostCommitCommand
 
 	registerPostCommitCommandsProvider(provider: PostCommitCommandsProvider): Disposable {
 		this.postCommitCommandsProviders.add(provider);
+		this._onDidChangePostCommitCommandsProviders.fire();
 
-		return toDisposable(() => this.postCommitCommandsProviders.delete(provider));
+		return toDisposable(() => {
+			this.postCommitCommandsProviders.delete(provider);
+			this._onDidChangePostCommitCommandsProviders.fire();
+		});
 	}
 
 	getPostCommitCommandsProviders(): PostCommitCommandsProvider[] {
diff --git a/extensions/git/src/postCommitCommands.ts b/extensions/git/src/postCommitCommands.ts
index 2fd6dc5676b..85d1689011a 100644
--- a/extensions/git/src/postCommitCommands.ts
+++ b/extensions/git/src/postCommitCommands.ts
@@ -4,10 +4,12 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as nls from 'vscode-nls';
-import { Command, Disposable } from 'vscode';
+import { Command, Disposable, Event } from 'vscode';
 import { PostCommitCommandsProvider } from './api/git';
 
 export interface IPostCommitCommandsProviderRegistry {
+	readonly onDidChangePostCommitCommandsProviders: Event<void>;
+
 	getPostCommitCommandsProviders(): PostCommitCommandsProvider[];
 	registerPostCommitCommandsProvider(provider: PostCommitCommandsProvider): Disposable;
 }