diff --git a/rtd_yeastx/.gitignore b/rtd_yeastx/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..aa7476cbff3a7e40e129254e5cb1e649e7fd5fa1
--- /dev/null
+++ b/rtd_yeastx/.gitignore
@@ -0,0 +1,2 @@
+/targets
+/test-output
diff --git a/rtd_yeastx/source/java/ch/systemsx/cisd/yeastx/etl/.gitignore b/rtd_yeastx/source/java/ch/systemsx/cisd/yeastx/etl/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..b238fd1ee5efb16eefd21d368068cfc31ceb44c6
--- /dev/null
+++ b/rtd_yeastx/source/java/ch/systemsx/cisd/yeastx/etl/.gitignore
@@ -0,0 +1 @@
+/CopyOfMLArchiverTask.java