diff --git a/src/dumm/.gitignore b/src/dumm/.gitignore
new file mode 100644
index 000000000..2b0886745
--- /dev/null
+++ b/src/dumm/.gitignore
@@ -0,0 +1,2 @@
+dumm
+irdumm
diff --git a/src/dumm/ext/.gitignore b/src/dumm/ext/.gitignore
new file mode 100644
index 000000000..cda5b9468
--- /dev/null
+++ b/src/dumm/ext/.gitignore
@@ -0,0 +1,3 @@
+dumm.so
+mkmf.log
+