diff --git a/.gitignore b/.gitignore
index 959d638e6..2ab4acb67 100644
--- a/.gitignore
+++ b/.gitignore
@@ -105,4 +105,7 @@ R-package/src/Makevars
 /cmake-build-debug/
 
 # GDB
-.gdb_history
\ No newline at end of file
+.gdb_history
+
+# Python joblib.Memory used in pytest.
+cachedir/
\ No newline at end of file