diff --git a/.gitignore b/.gitignore
index 4220018..d3567bc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,5 @@
 # Ignore build products from tools
 tools/**/*.o
 tools/fip_create/fip_create
+tools/cert_create/src/*.o
+tools/cert_create/cert_create