diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index 8da4031e72..0f05533902 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -1028,6 +1028,10 @@ static void *threaded_second_pass(void *data)
 		struct object_entry *child_obj;
 		struct base_data *child;
 
+		counter_lock();
+		display_progress(progress, nr_resolved_deltas);
+		counter_unlock();
+
 		work_lock();
 		if (list_empty(&work_head)) {
 			/*
diff --git a/t/t5302-pack-index.sh b/t/t5302-pack-index.sh
index c92e553a2f..7c9d687367 100755
--- a/t/t5302-pack-index.sh
+++ b/t/t5302-pack-index.sh
@@ -277,4 +277,11 @@ test_expect_success 'index-pack --fsck-objects also warns upon missing tagger in
 	grep "^warning:.* expected .tagger. line" err
 '
 
+test_expect_success 'index-pack -v --stdin produces progress for both phases' '
+	pack=$(git pack-objects --all pack </dev/null) &&
+	GIT_PROGRESS_DELAY=0 git index-pack -v --stdin <pack-$pack.pack 2>err &&
+	test_i18ngrep "Receiving objects" err &&
+	test_i18ngrep "Resolving deltas" err
+'
+
 test_done