diff --git a/.gitignore b/.gitignore
index e4f289f9e94f..96bb4902398c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@
 *.pyo
 TAGS
 tags
+compile_commands.json
 # Ignore ID generated by idutils and un-ignore id directory (for Indonesian locale)
 ID
 !id/
diff --git a/.hgignore b/.hgignore
index 43c3a0703fed..3a16cd261766 100644
--- a/.hgignore
+++ b/.hgignore
@@ -11,6 +11,7 @@
 \.gcda
 \.gcno
 \.gcov
+compile_commands\.json
 
 # Vim swap files.
 ^\.sw.$