diff --git a/packages/template/-private/index.d.ts b/packages/template/-private/index.d.ts
index c0484a04d..8b68824c2 100644
--- a/packages/template/-private/index.d.ts
+++ b/packages/template/-private/index.d.ts
@@ -35,6 +35,7 @@ export type ContentValue =
   | void
   | SafeString
   | Node
+  | Map<any, any>
   | ArglessCurlyComponent;
 
 // This encompasses both @glimmer/runtime and @ember/template's notion of `SafeString`s,
diff --git a/packages/template/__tests__/emit-content.test.ts b/packages/template/__tests__/emit-content.test.ts
index 11fd45519..b0ee63508 100644
--- a/packages/template/__tests__/emit-content.test.ts
+++ b/packages/template/__tests__/emit-content.test.ts
@@ -28,3 +28,6 @@ emitContent(returnsVoid());
 // Emitting an HTML element inserts that element into the DOM
 emitContent(document.createElement('div'));
 emitContent(document.createElementNS('http://www.w3.org/2000/svg', 'svg'));
+
+// Maps should be usable as content values for each-in
+emitContent(new Map([['key', 'value']]));