diff --git a/.circleci/config.yml b/.circleci/config.yml
index 04440e70b2..81e81620f7 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -63,6 +63,7 @@ jobs:
           command: |
             . "$NVM_DIR/nvm.sh"
             nvm use 8.10.0
+            npm install -g npm@6.4.1
             npm run test:server
             # Disable code coverage (temporarily): https://github.com/mozilla-services/screenshots/issues/4728
             # mkdir -p $CIRCLE_TEST_REPORTS/server-coverage
diff --git a/.nsprc b/.nsprc
index 9ef8d4e9d8..416eaedc4f 100644
--- a/.nsprc
+++ b/.nsprc
@@ -1,10 +1,12 @@
 {
-  // See https://github.com/mozilla-services/screenshots/issues/4397
   "exceptions": [
-    "https://nodesecurity.io/advisories/566",
-    "https://nodesecurity.io/advisories/577",
-    "https://nodesecurity.io/advisories/598",
-    "https://nodesecurity.io/advisories/663",
-    "https://nodesecurity.io/advisories/664"
+    "https://npmjs.com/advisories/118",
+    "https://npmjs.com/advisories/534",
+    "https://npmjs.com/advisories/566",
+    "https://npmjs.com/advisories/577",
+    "https://npmjs.com/advisories/598",
+    "https://npmjs.com/advisories/663",
+    "https://npmjs.com/advisories/664",
+    "https://npmjs.com/advisories/681"
    ]
 }
diff --git a/README.md b/README.md
index 6b02864643..5b958b7aea 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ We apologize but we have no story for development on Windows (though the add-on
 
 ### Linting and Testing
 
-`npm run test` will run tests as well as eslint and [nsp](https://www.npmjs.com/package/nsp).  You can control the tests with the following shell/environment variables:
+`npm run test` will run tests as well as eslint.  You can control the tests with the following shell/environment variables:
 - `MOZ_HEADLESS` - when this variable is set, the Selenium tests will run in [headless mode](https://developer.mozilla.org/en-US/Firefox/Headless_mode).
 - `SCREENSHOTS_BACKEND` - the server where the addon will try to save shots if the default http://localhost:10080 is not available or desirable.
 
diff --git a/bin/filtered_npm_audit.sh b/bin/filtered_npm_audit.sh
new file mode 100755
index 0000000000..63900426f9
--- /dev/null
+++ b/bin/filtered_npm_audit.sh
@@ -0,0 +1,307 @@
+#!/bin/bash
+
+set -ue
+
+# This script does platform detection, downloads audit-filter, and runs it.
+#
+# Platform detection and dependent functions from rustup-init.sh which is:
+#
+# Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+
+need_cmd() {
+    if ! check_cmd "$1"
+    then err "need '$1' (command not found)"
+    fi
+}
+
+check_cmd() {
+    command -v "$1" > /dev/null 2>&1
+    return $?
+}
+
+err() {
+    say "$1" >&2
+    exit 1
+}
+
+say() {
+    echo "filtered_npm_audit.sh: $1"
+}
+
+assert_nz() {
+    if [ -z "$1" ]; then err "assert_nz $2"; fi
+}
+
+# This wraps curl or wget. Try curl first, if not installed,
+# use wget instead.
+downloader() {
+    if check_cmd curl
+    then _dld=curl
+    elif check_cmd wget
+    then _dld=wget
+    else _dld='curl or wget' # to be used in error message of need_cmd
+    fi
+
+    if [ "$1" = --check ]
+    then need_cmd "$_dld"
+    elif [ "$_dld" = curl ]
+    then curl -sSfL "$1" -o "$2"
+    elif [ "$_dld" = wget ]
+    then wget "$1" -O "$2"
+    else err "Unknown downloader"   # should not reach here
+    fi
+}
+
+get_bitness() {
+    need_cmd head
+    # Architecture detection without dependencies beyond coreutils.
+    # ELF files start out "\x7fELF", and the following byte is
+    #   0x01 for 32-bit and
+    #   0x02 for 64-bit.
+    # The printf builtin on some shells like dash only supports octal
+    # escape sequences, so we use those.
+    local _current_exe_head=$(head -c 5 /proc/self/exe )
+    if [ "$_current_exe_head" = "$(printf '\177ELF\001')" ]; then
+        echo 32
+    elif [ "$_current_exe_head" = "$(printf '\177ELF\002')" ]; then
+        echo 64
+    else
+        err "unknown platform bitness"
+    fi
+}
+
+get_endianness() {
+    local cputype=$1
+    local suffix_eb=$2
+    local suffix_el=$3
+
+    # detect endianness without od/hexdump, like get_bitness() does.
+    need_cmd head
+    need_cmd tail
+
+    local _current_exe_endianness="$(head -c 6 /proc/self/exe | tail -c 1)"
+    if [ "$_current_exe_endianness" = "$(printf '\001')" ]; then
+        echo "${cputype}${suffix_el}"
+    elif [ "$_current_exe_endianness" = "$(printf '\002')" ]; then
+        echo "${cputype}${suffix_eb}"
+    else
+        err "unknown platform endianness"
+    fi
+}
+
+get_architecture() {
+
+    local _ostype="$(uname -s)"
+    local _cputype="$(uname -m)"
+
+    if [ "$_ostype" = Linux ]; then
+        if [ "$(uname -o)" = Android ]; then
+            local _ostype=Android
+        fi
+    fi
+
+    if [ "$_ostype" = Darwin -a "$_cputype" = i386 ]; then
+        # Darwin `uname -s` lies
+        if sysctl hw.optional.x86_64 | grep -q ': 1'; then
+            local _cputype=x86_64
+        fi
+    fi
+
+    case "$_ostype" in
+
+        Android)
+            local _ostype=linux-android
+            ;;
+
+        Linux)
+            local _ostype=unknown-linux-gnu
+            ;;
+
+        FreeBSD)
+            local _ostype=unknown-freebsd
+            ;;
+
+        NetBSD)
+            local _ostype=unknown-netbsd
+            ;;
+
+        DragonFly)
+            local _ostype=unknown-dragonfly
+            ;;
+
+        Darwin)
+            local _ostype=apple-darwin
+            ;;
+
+        MINGW* | MSYS* | CYGWIN*)
+            local _ostype=pc-windows-gnu
+            ;;
+
+        *)
+            err "unrecognized OS type: $_ostype"
+            ;;
+
+    esac
+
+    case "$_cputype" in
+
+        i386 | i486 | i686 | i786 | x86)
+            local _cputype=i686
+            ;;
+
+        xscale | arm)
+            local _cputype=arm
+            if [ "$_ostype" = "linux-android" ]; then
+                local _ostype=linux-androideabi
+            fi
+            ;;
+
+        armv6l)
+            local _cputype=arm
+            if [ "$_ostype" = "linux-android" ]; then
+                local _ostype=linux-androideabi
+            else
+                local _ostype="${_ostype}eabihf"
+            fi
+            ;;
+
+        armv7l | armv8l)
+            local _cputype=armv7
+            if [ "$_ostype" = "linux-android" ]; then
+                local _ostype=linux-androideabi
+            else
+                local _ostype="${_ostype}eabihf"
+            fi
+            ;;
+
+        aarch64)
+            local _cputype=aarch64
+            ;;
+
+        x86_64 | x86-64 | x64 | amd64)
+            local _cputype=x86_64
+            ;;
+
+        mips)
+            local _cputype="$(get_endianness $_cputype "" 'el')"
+            ;;
+
+        mips64)
+            local _bitness="$(get_bitness)"
+            if [ $_bitness = "32" ]; then
+                if [ $_ostype = "unknown-linux-gnu" ]; then
+                    # 64-bit kernel with 32-bit userland
+                    # endianness suffix is appended later
+                    local _cputype=mips
+                fi
+            else
+                # only n64 ABI is supported for now
+                local _ostype="${_ostype}abi64"
+            fi
+
+            local _cputype="$(get_endianness $_cputype "" 'el')"
+            ;;
+
+        ppc)
+            local _cputype=powerpc
+            ;;
+
+        ppc64)
+            local _cputype=powerpc64
+            ;;
+
+        ppc64le)
+            local _cputype=powerpc64le
+            ;;
+
+        *)
+            err "unknown CPU type: $_cputype"
+
+    esac
+
+    # Detect 64-bit linux with 32-bit userland
+    if [ $_ostype = unknown-linux-gnu -a $_cputype = x86_64 ]; then
+        if [ "$(get_bitness)" = "32" ]; then
+            local _cputype=i686
+        fi
+    fi
+
+    # Detect armv7 but without the CPU features Rust needs in that build,
+    # and fall back to arm.
+    # See https://github.com/rust-lang-nursery/rustup.rs/issues/587.
+    if [ $_ostype = "unknown-linux-gnueabihf" -a $_cputype = armv7 ]; then
+        if ensure grep '^Features' /proc/cpuinfo | grep -q -v neon; then
+            # At least one processor does not have NEON.
+            local _cputype=arm
+        fi
+    fi
+
+    local _arch="$_cputype-$_ostype"
+
+    RETVAL="$_arch"
+}
+
+check_ci() {
+    if [ -z ${CI+0} ]; then
+    	echo "Skipping dep lint. (set CI != 0 to run locally)";
+    	exit 0
+    fi
+}
+
+main() {
+    downloader --check
+    need_cmd uname
+    need_cmd chmod
+    need_cmd npm
+    check_ci
+
+    get_architecture || return 1
+    local _sha256
+    local _arch="$RETVAL"
+    assert_nz "$_arch" "arch"
+
+    say "Detected architecture ${_arch}"
+    if [[ $_arch == x86_64-unknown-linux* ]]; then
+	_arch=x86_64-unknown-linux-musl
+	_sha256=0f0cbb0edb582a2d6c74b44e10e7ad1abf00497a4afbe791cdca88cca3c1cbdf
+    elif [[ $_arch == i686-unknown-linux* ]]; then
+	_arch=i686-unknown-linux-musl
+	_sha256=916a41c405e05d720f90a8137e92783dc4bcff01108878980e0f32dd87160000
+    elif [[ $_arch != x86_64-apple-darwin ]]; then
+	err "Unsupported architecture $_arch"
+    else
+	# x86_64-apple-darwin
+	_sha256=be977a1937e6eb4542ac19896a3ec100c6dab3cba58b1632779f8e4b1f57ef11
+    fi
+    say "Fetching tarball for architecture ${_arch} w/ sha256: ${_sha256}"
+
+    local _tag=0.2.5
+    local _basename=audit-filter-${_tag}-${_arch}
+    local _file=${_basename}.tar.gz
+    local _url=https://github.com/mozilla-services/audit-filter/releases/download/${_tag}/${_basename}.tar.gz
+
+    cd bin/
+    test -f ${_file} || downloader "$_url" "$_file"
+    test -f ${_basename}/audit-filter || tar xvzf ${_file} ${_basename}/audit-filter > /dev/null
+    echo "${_sha256} ${_basename}/audit-filter" | sha256sum -c - > /dev/null || exit 1
+
+    chmod +x ${_basename}/audit-filter
+    say "Extracted bin/${_file}/audit-filter with expected sha256"
+    cd -
+
+    local _npm=$(npm prefix -g)/bin/npm
+    say "Using npm at: ${_npm} with version: $($_npm --version)"
+    set -v
+    $_npm audit --json | bin/${_basename}/audit-filter --nsp-config .nsprc
+}
+
+main "$@" || exit 1
diff --git a/package.json b/package.json
index 54ca5ba294..3d574c7da9 100644
--- a/package.json
+++ b/package.json
@@ -95,6 +95,7 @@
     "lint:flake8": "make flake8",
     "lint:js": "eslint .",
     "lint:sass": "sass-lint -v -q",
+    "lint:deps": "./bin/filtered_npm_audit.sh",
     "postlint": "npm audit || true",
     "posttest": "npm run lint",
     "test": "bin/test-helpers/make_addon_with_unavailable_server && mocha test/ test/server/unit/*",