diff --git a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_isoff.sh b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_isoff.sh
index 4119801..0c65b0b 100755
--- a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_isoff.sh
+++ b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_isoff.sh
@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# shellcheck source=meta-google/recipes-google/gpio/gpio-ctrl/lib.sh
 source /usr/share/gpio-host-pwr/lib.sh || exit
 
 gpio_build_cache 10 "$HOST_GPIO_PGOOD" || exit 255
diff --git a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_powercycle.sh b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_powercycle.sh
index 3c8f002..5f12468 100644
--- a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_powercycle.sh
+++ b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_powercycle.sh
@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# shellcheck source=meta-google/recipes-google/gpio/gpio-ctrl/lib.sh
 source /usr/share/gpio-host-pwr/lib.sh || exit
 gpio_build_cache 10 "$HOST_GPIO_PGOOD" "$HOST_GPIO_PWR_BTN" || exit
 
diff --git a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_poweroff.sh b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_poweroff.sh
index 58c1da8..7d93a4a 100755
--- a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_poweroff.sh
+++ b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_poweroff.sh
@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# shellcheck source=meta-google/recipes-google/gpio/gpio-ctrl/lib.sh
 source /usr/share/gpio-host-pwr/lib.sh || exit
 
 gpio_build_cache 10 "$HOST_GPIO_PGOOD" "$HOST_GPIO_PWR_BTN" || exit
diff --git a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_poweron.sh b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_poweron.sh
index 2e6eb02..b115c9b 100755
--- a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_poweron.sh
+++ b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_poweron.sh
@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# shellcheck source=meta-google/recipes-google/gpio/gpio-ctrl/lib.sh
 source /usr/share/gpio-host-pwr/lib.sh || exit
 
 gpio_build_cache 10 "$HOST_GPIO_PGOOD" "$HOST_GPIO_PWR_BTN" || exit
diff --git a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_reset.sh b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_reset.sh
index 2f48a12..d935a41 100755
--- a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_reset.sh
+++ b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/host_reset.sh
@@ -13,6 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# shellcheck source=meta-google/recipes-google/gpio/gpio-ctrl/lib.sh
 source /usr/share/gpio-host-pwr/lib.sh || exit
 
 if [[ "${1-}" == "warm" ]]; then
diff --git a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/lib.sh b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/lib.sh
index d523c5d..ec9723f 100644
--- a/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/lib.sh
+++ b/meta-google/recipes-google/host-power-ctrl/gpio-host-pwr/lib.sh
@@ -17,23 +17,30 @@
 # Executing this directly will do nothing.
 [ -n "${host_pwr_init-}" ] && return
 
+# shellcheck source=meta-google/recipes-google/gpio/gpio-ctrl/lib.sh
 source /usr/share/gpio-ctrl/lib.sh || exit
 
 # Read by the tooling to determine if the machine is powered on or off
+# shellcheck disable=SC2034
 HOST_GPIO_PGOOD='unset'
 # Set according to whether the host is powered on or off
+# shellcheck disable=SC2034
 HOST_LED_PWR=''
 # Written by the tooling to assert the power button
+# shellcheck disable=SC2034
 HOST_GPIO_PWR_BTN='unset'
 # Written by the tooling to assert a cold reset
+# shellcheck disable=SC2034
 HOST_GPIO_COLD_RESET='unset'
 # Written by the tooling to assert a warm reset
+# shellcheck disable=SC2034
 HOST_GPIO_WARM_RESET='unset'
 
 # Load configurations from a known location in the filesystem to populate
 # named GPIOs
 shopt -s nullglob
 for conf in /usr/share/gpio-host-pwr/conf.d/*.sh; do
+  # shellcheck source=/dev/null
   source "$conf"
 done