diff --git a/bitnami/pgpool/4/debian-10/rootfs/opt/bitnami/scripts/libpgpool.sh b/bitnami/pgpool/4/debian-10/rootfs/opt/bitnami/scripts/libpgpool.sh
index 3be5bc5568d6..8b1b557edf56 100644
--- a/bitnami/pgpool/4/debian-10/rootfs/opt/bitnami/scripts/libpgpool.sh
+++ b/bitnami/pgpool/4/debian-10/rootfs/opt/bitnami/scripts/libpgpool.sh
@@ -80,7 +80,7 @@ export PGPOOL_POSTGRES_CUSTOM_PASSWORDS="${PGPOOL_POSTGRES_CUSTOM_PASSWORDS:-}"
 export PGPOOL_AUTO_FAILBACK="${PGPOOL_AUTO_FAILBACK:-no}"
 export PGPOOL_BACKEND_APPLICATION_NAMES="${PGPOOL_BACKEND_APPLICATION_NAMES:-}"
 export PGPOOL_AUTHENTICATION_METHOD="${PGPOOL_AUTHENTICATION_METHOD:-md5}"
-export PGPOOL_AES_KEY="${PGPOOL_AES_KEY:-$(head -c 20 /dev/random | base64)}"
+export PGPOOL_AES_KEY="${PGPOOL_AES_KEY:-$(head -c 20 /dev/urandom | base64)}"
 
 # SSL
 export PGPOOL_ENABLE_TLS="${PGPOOL_ENABLE_TLS:-no}"