diff --git a/rakelib/check-manifest.rake b/rakelib/check-manifest.rake
index 065e0a5c17..50ca2d53eb 100644
--- a/rakelib/check-manifest.rake
+++ b/rakelib/check-manifest.rake
@@ -55,6 +55,8 @@ task :check_manifest, [:verbose] do |_, args|
     [a-z]*.{log,out}
     [0-9]*
     appveyor.yml
+    **/compile_commands.json
+    gumbo-parser/fuzzer/*
     gumbo-parser/test/*
     gumbo-parser/gperf-filter.sed
     lib/nokogiri/**/nokogiri.{jar,so}