diff --git a/buildbot/master/files/config/master.cfg b/buildbot/master/files/config/master.cfg
index 20d4fe94..3b9c7e9e 100644
--- a/buildbot/master/files/config/master.cfg
+++ b/buildbot/master/files/config/master.cfg
@@ -130,6 +130,7 @@ linux_rel_factory = create_servo_factory([
     steps.Compile(command=["./mach", "build-geckolib", "--release"], env=linux_headless_env),
     steps.ShellCommand(command=["bash", "./etc/ci/lockfile_changed.sh"], env=linux_headless_env),
     steps.ShellCommand(command=["bash", "./etc/ci/manifest_changed.sh"], env=linux_headless_env),
+    steps.ShellCommand(command=["bash", "./etc/ci/check_no_unwrap.sh"], env=linux_headless_env),
 ])
 
 mac_rel_wpt_factory = create_servo_factory([