diff --git a/.gitignore b/.gitignore
index 47c38e3f1..3439944e5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -82,6 +82,7 @@ pkcs7envelopedData.der
 diff
 sslSniffer/sslSnifferTest/tracefile.txt
 tracefile.txt
+test_bio.txt
 *.gz
 *.zip
 *.bak