diff --git a/tests/drivers/pwm/gpio_loopback/testcase.yaml b/tests/drivers/pwm/gpio_loopback/testcase.yaml
index 2cb51af68ece..6654728f5b2e 100644
--- a/tests/drivers/pwm/gpio_loopback/testcase.yaml
+++ b/tests/drivers/pwm/gpio_loopback/testcase.yaml
@@ -8,6 +8,7 @@ common:
   harness: ztest
   harness_config:
     fixture: gpio_loopback
+  timeout: 20
 
 tests:
   drivers.pwm.gpio_loopback: