diff --git a/mozglue/build/TsanOptions.cpp b/mozglue/build/TsanOptions.cpp
index 2480ce918fe7..bfab2ddc67b6 100644
--- a/mozglue/build/TsanOptions.cpp
+++ b/mozglue/build/TsanOptions.cpp
@@ -228,6 +228,10 @@ extern "C" const char* __tsan_default_suppressions() {
          "race:_dl_deallocate_tls\n"
          "race:__libc_memalign\n"
 
+         // Bug 1664535
+         "race:setNeedsIncrementalBarrier\n"
+         "race:needsIncrementalBarrier\n"
+
          // Bug 1664803
          "race:Sampler::sSigHandlerCoordinator\n"