diff --git a/src/compose/resolve-flow-collection.ts b/src/compose/resolve-flow-collection.ts
index 785f7bb6..7e59af7a 100644
--- a/src/compose/resolve-flow-collection.ts
+++ b/src/compose/resolve-flow-collection.ts
@@ -198,6 +198,8 @@ export function resolveFlowCollection(
         const map = new YAMLMap(ctx.schema)
         map.flow = true
         map.items.push(pair)
+        const endRange = (valueNode ?? keyNode).range
+        map.range = [keyNode.range[0], endRange[1], endRange[2]]
         ;(coll as YAMLSeq).items.push(map)
       }
       offset = valueNode ? valueNode.range[2] : valueProps.end
diff --git a/src/nodes/Node.ts b/src/nodes/Node.ts
index d590012c..9ddef5e5 100644
--- a/src/nodes/Node.ts
+++ b/src/nodes/Node.ts
@@ -41,6 +41,7 @@ export type ParsedNode =
   | YAMLMap.Parsed
   | YAMLSeq.Parsed
 
+/** `[start, value-end, node-end]` */
 export type Range = [number, number, number]
 
 export abstract class NodeBase {
diff --git a/tests/doc/parse.ts b/tests/doc/parse.ts
index 30a08ae4..a71a1f80 100644
--- a/tests/doc/parse.ts
+++ b/tests/doc/parse.ts
@@ -392,6 +392,12 @@ describe('maps with no values', () => {
     expect(doc.range).toEqual([0, 4, 4])
   })
 
+  test('pair in flow seq has correct range (#573)', () => {
+    const doc = YAML.parseDocument<any, false>('[a:]')
+    expect(doc.range).toEqual([0, 4, 4])
+    expect(doc.get(0).range).toEqual([1, 3, 3])
+  })
+
   test('implicit scalar key after explicit key with no value', () => {
     const doc = YAML.parseDocument<YAML.YAMLMap, false>('? - 1\nx:\n')
     expect(doc.contents.items).toMatchObject([