diff --git a/.cvsignore b/.cvsignore
index 6a3bfe09a..b3a7dd024 100644
--- a/.cvsignore
+++ b/.cvsignore
@@ -5,6 +5,7 @@ parse.cc.output
 syn-rules.cc
 syn-rules.cc.output
 lexor.cc
+iverilog-vpi
 ivl
 ivl.exp
 dep