diff --git a/.gitignore b/.gitignore
index 66199edd4a..cb1db5492c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -185,6 +185,7 @@
 /test-dump-cache-tree
 /test-scrap-cache-tree
 /test-genrandom
+/test-hashmap
 /test-index-version
 /test-line-buffer
 /test-match-trees