diff --git a/Node.gitignore b/Node.gitignore
index 5148e527..aea5294d 100644
--- a/Node.gitignore
+++ b/Node.gitignore
@@ -7,6 +7,7 @@ npm-debug.log*
 pids
 *.pid
 *.seed
+*.pid.lock
 
 # Directory for instrumented libs generated by jscoverage/JSCover
 lib-cov