diff --git a/scripts/dtc/.gitignore b/scripts/dtc/.gitignore
index 689b9be0f9..8c3f03b092 100644
--- a/scripts/dtc/.gitignore
+++ b/scripts/dtc/.gitignore
@@ -1 +1,5 @@
 /dtc
+
+*.tab.h
+*.lex.c
+*.tab.c
diff --git a/scripts/kconfig/.gitignore b/scripts/kconfig/.gitignore
index 2da579edcb..6a5e3a0d8e 100644
--- a/scripts/kconfig/.gitignore
+++ b/scripts/kconfig/.gitignore
@@ -15,3 +15,6 @@ nconf
 qconf
 gconf
 kxgettext
+
+*.lex.c
+*.tab.c