diff --git a/.gitignore b/.gitignore
index 5211373..d061ca6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,4 +12,10 @@ pom.xml.asc
 .hg/
 out
 notes
-.idea/
\ No newline at end of file
+.idea/
+.calva/
+
+# Don't commit the data directory that we'll
+# use to hold the data from
+# https://github.com/thelmuth/program-synthesis-benchmark-datasets
+/data
\ No newline at end of file