diff --git a/go.mod b/go.mod
index e350120..4c4a4b4 100644
--- a/go.mod
+++ b/go.mod
@@ -21,7 +21,6 @@ require (
 	github.com/mattn/go-sqlite3 v1.11.0
 	github.com/onsi/ginkgo v1.10.2 // indirect
 	github.com/onsi/gomega v1.7.0 // indirect
-	github.com/pebbe/zmq4 v1.0.0 // indirect
 	github.com/pkg/errors v0.8.1
 	github.com/rogpeppe/go-internal v1.5.0 // indirect
 	github.com/sirupsen/logrus v1.4.2
diff --git a/go.sum b/go.sum
index 65f4772..46e2c86 100644
--- a/go.sum
+++ b/go.sum
@@ -108,7 +108,6 @@ github.com/onsi/ginkgo v1.10.2/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+
 github.com/onsi/gomega v1.4.1/go.mod h1:C1qb7wdrVGGVU+Z6iS04AVkA3Q65CEZX59MT0QO5uiA=
 github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
-github.com/pebbe/zmq4 v1.0.0/go.mod h1:7N4y5R18zBiu3l0vajMUWQgZyjv464prE8RCyBcmnZM=
 github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
diff --git a/start.sh b/start.sh
index 16a94c9..45eb660 100755
--- a/start.sh
+++ b/start.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright 2020-2022 The Hush Developers
 # Released under GPLv3
 
diff --git a/util/build-debian-package.sh b/util/build-debian-package.sh
index ec4c5bc..909dfd3 100755
--- a/util/build-debian-package.sh
+++ b/util/build-debian-package.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Copyright (c) 2021-2022 The Hush developers
 # Distributed under the GPLv3 software license, see the accompanying
 # file LICENSE or https://www.gnu.org/licenses/gpl-3.0.en.html