diff --git a/extension/CHANGELOG.md b/extension/CHANGELOG.md
index 314e778..26e6ccf 100644
--- a/extension/CHANGELOG.md
+++ b/extension/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Change Log
 
+## Unrealeased
+
+-   Submits the expression when the expression input loses focus.
+
 ## 0.13.0
 
 -   Adds "debugVisualizer.debugAdapterConfigurations" config to customize the expression template.
diff --git a/webview/src/components/ExpressionInput.tsx b/webview/src/components/ExpressionInput.tsx
index 7619fb8..2a19eeb 100644
--- a/webview/src/components/ExpressionInput.tsx
+++ b/webview/src/components/ExpressionInput.tsx
@@ -82,6 +82,10 @@ export class ExpressionInput extends React.Component<{ model: Model }> {
 			this.contentHeight = e.contentHeight;
 		});
 
+		this.editor.onDidBlurEditorText(() => {
+			this.submit();
+		});
+
 		this.editor.onKeyDown(e => {
 			if (e.keyCode == monaco.KeyCode.Enter) {
 				if (