diff --git a/etc/ci/buildbot_steps.yml b/etc/ci/buildbot_steps.yml
index 497ba9727626..a25235c503fe 100644
--- a/etc/ci/buildbot_steps.yml
+++ b/etc/ci/buildbot_steps.yml
@@ -68,6 +68,7 @@ linux-rel-nogate:
   - ./mach clean-nightlies --keep 3 --force
   - ./mach build --release
   - python ./etc/ci/chaos_monkey_test.py
+  - python ./etc/ci/mutation_test.py
 
 mac-rel-intermittent:
   - ./mach clean-nightlies --keep 3 --force
diff --git a/etc/ci/mutation_test.py b/etc/ci/mutation_test.py
new file mode 100644
index 000000000000..22504fea0457
--- /dev/null
+++ b/etc/ci/mutation_test.py
@@ -0,0 +1,4 @@
+import sys
+import subprocess
+
+subprocess.call('python python/servo/mutation/init.py components/script/dom', shell=True)