diff --git a/projects/naga/project.yaml b/projects/naga/project.yaml
index 17374e2d3..fb4b3b0d5 100644
--- a/projects/naga/project.yaml
+++ b/projects/naga/project.yaml
@@ -8,3 +8,5 @@ fuzzing_engines:
   - libfuzzer
 vendor_ccs:
   - maxnair.dev@gmail.com
+coverage_extra_args: >
+  -ignore-filename-regex=.*/rustc/.*