diff --git a/tools/testrunner/testproc/fuzzer.py b/tools/testrunner/testproc/fuzzer.py
index 965ba23d04..1237da56b2 100644
--- a/tools/testrunner/testproc/fuzzer.py
+++ b/tools/testrunner/testproc/fuzzer.py
@@ -43,6 +43,7 @@ EXTRA_FLAGS = [
   (0.1, '--regexp-tier-up-ticks=10'),
   (0.1, '--regexp-tier-up-ticks=100'),
   (0.1, '--stress-background-compile'),
+  (0.1, '--stress-concurrent-inlining'),
   (0.1, '--stress-lazy-source-positions'),
   (0.1, '--stress-wasm-code-gc'),
   (0.1, '--turbo-instruction-scheduling'),