diff --git a/ext/openssl/.cvsignore b/ext/openssl/.cvsignore
index dfb8bfb8bb..3a9a9f341f 100644
--- a/ext/openssl/.cvsignore
+++ b/ext/openssl/.cvsignore
@@ -2,3 +2,4 @@ GNUmakefile
 Makefile
 mkmf.log
 dep
+extconf.h