diff --git a/tools/wptrunner/wptrunner/browsers/chrome.py b/tools/wptrunner/wptrunner/browsers/chrome.py
index b8c0a73e265881..1d8a6c939e5ef2 100644
--- a/tools/wptrunner/wptrunner/browsers/chrome.py
+++ b/tools/wptrunner/wptrunner/browsers/chrome.py
@@ -132,6 +132,13 @@ def executor_kwargs(logger, test_type, test_environment, run_info_data, subsuite
     chrome_options["args"].append("--disable-infobars")
     # For WebNN tests.
     chrome_options["args"].append("--enable-features=WebMachineLearningNeuralNetwork")
+    # For Web Speech API tests.
+    chrome_options["args"].append("--enable-features=" + ",".join([
+        "InstallOnDeviceSpeechRecognition",
+        "OnDeviceWebSpeechAvailable",
+        "OnDeviceWebSpeech",
+        "MediaStreamTrackWebSpeech",
+    ]))
 
     # Classify `http-private`, `http-public` and https variants in the
     # appropriate IP address spaces.