diff --git a/.gitignore b/.gitignore
index 0e3db09..1158381 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,8 @@
 **/tra_analysis/
 **/temp/*
 
+**/*.pid
+
 **/errorlog.txt
 /dist/superscript.*
 /dist/superscript
\ No newline at end of file