diff --git a/configs/sandbox64_defconfig b/configs/sandbox64_defconfig
index b06ffcec3a3c5a855a1164aceece556745b23e07..64d1d3102f67f4895449d7d357f37a02b4caedf0 100644
--- a/configs/sandbox64_defconfig
+++ b/configs/sandbox64_defconfig
@@ -161,6 +161,8 @@ CONFIG_REGULATOR_RK8XX=y
 CONFIG_REGULATOR_S5M8767=y
 CONFIG_DM_REGULATOR_SANDBOX=y
 CONFIG_REGULATOR_TPS65090=y
+CONFIG_DM_RNG=y
+CONFIG_RNG_SANDBOX=y
 CONFIG_DM_PWM=y
 CONFIG_PWM_SANDBOX=y
 CONFIG_RAM=y
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 858ad04b10fcff3cc9cadcb72688047bf2aa540a..d8d8645425e68bad08d5b114b4caa9930e49d80c 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -181,6 +181,8 @@ CONFIG_REGULATOR_RK8XX=y
 CONFIG_REGULATOR_S5M8767=y
 CONFIG_DM_REGULATOR_SANDBOX=y
 CONFIG_REGULATOR_TPS65090=y
+CONFIG_DM_RNG=y
+CONFIG_RNG_SANDBOX=y
 CONFIG_DM_PWM=y
 CONFIG_PWM_SANDBOX=y
 CONFIG_RAM=y