diff --git a/ci/kokoro/continuous-chromeos.cfg b/ci/kokoro/continuous-chromeos.cfg
index 3dd19582fd..6028dc22c2 100644
--- a/ci/kokoro/continuous-chromeos.cfg
+++ b/ci/kokoro/continuous-chromeos.cfg
@@ -1,3 +1,6 @@
 # Format: //devtools/kokoro/config/proto/build.proto
 
 build_file: "crosvm/ci/kokoro/build-chromeos.sh"
+
+# ChromeOS builds have a longer timeout: 4h
+timeout_mins: 240