diff --git a/v2/index/index.go b/v2/index/index.go
index 96b730f165ba5cbe5c43bde785e762b9407d3da1..669728bbac4fc9cf8122c9375e1b2e0c3249ddba 100644
--- a/v2/index/index.go
+++ b/v2/index/index.go
@@ -52,9 +52,9 @@ func New(codec multicodec.Code) (Index, error) {
 	}
 }
 
-// Save writes a generated index into the given `path`.
+// Save writes a generated index into the given `path` replacing the file if it exists.
 func Save(idx Index, path string) error {
-	stream, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0o640)
+	stream, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0o640)
 	if err != nil {
 		return err
 	}
diff --git a/v2/testdata/sample-index.carindex b/v2/testdata/sample-index.carindex
index 0f91e36507fc21d3a93a00f32bf330e024405af8..5df07d379e444d8fa3a0f5b96a59874f208bd0c1 100644
Binary files a/v2/testdata/sample-index.carindex and b/v2/testdata/sample-index.carindex differ