diff --git a/.gitignore b/.gitignore
index 210bc0f..d73d627 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 build*/
 subprojects/*
 !subprojects/acpi-power-state-daemon/
+!subprojects/libcr51sign/
 !subprojects/metrics-ipmi-blobs/
 !subprojects/ncsid/
 !subprojects/nemora-postd/