diff --git a/.gitignore b/.gitignore
index 0bd013576..0e9b76aa1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,6 +23,7 @@ dddrun*
 doxygen-doc
 gdbrun*
 gmon.out
+ncverilog.history
 internals.txt
 verilator.txt
 verilator_bin*
diff --git a/MANIFEST.SKIP b/MANIFEST.SKIP
index 43b95e7f3..4e602ed87 100644
--- a/MANIFEST.SKIP
+++ b/MANIFEST.SKIP
@@ -34,6 +34,7 @@ verilator.pc$
 verilator_bin.*
 verilator_coverage_bin.*
 .vcsmx_rebuild$
+ncverilog.history
 autom4te\.cache/
 nodist/
 /simv$