diff --git a/flaky_repos.xml b/flaky_repos.xml
index 204d2be..05814c2 100644
--- a/flaky_repos.xml
+++ b/flaky_repos.xml
@@ -46,6 +46,10 @@
   <project path="src/platform/microbenchmarks"
            name="chromiumos/platform/microbenchmarks"
            remote="chromium" />
+  <project path="src/third_party/hdctools"
+           name="chromiumos/third_party/hdctools"
+           revision="refs/heads/main"
+           remote="chromium" />
 
   <!--
    breakpad and lss are special; they need to be pinned to specific commit