diff --git a/Cantera/src/oneD/.cvsignore b/Cantera/src/oneD/.cvsignore
index df42429a6..1e4e92b02 100644
--- a/Cantera/src/oneD/.cvsignore
+++ b/Cantera/src/oneD/.cvsignore
@@ -1,3 +1,4 @@
 .depends
 Makefile
 SunWS_cache
+*.d