diff --git a/development/announcer.js b/development/announcer.js
old mode 100644
new mode 100755
index a3fc459a9..2c23cf9f8
--- a/development/announcer.js
+++ b/development/announcer.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 const fs = require('fs');
 const path = require('path');
 const { version } = require('../package.json');
diff --git a/development/build/index.js b/development/build/index.js
index 308495017..628cbbbac 100755
--- a/development/build/index.js
+++ b/development/build/index.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 //
 // build task definitions
 //
diff --git a/development/create-static-server.js b/development/create-static-server.js
old mode 100644
new mode 100755
index c01a5e16a..a8d5e28b0
--- a/development/create-static-server.js
+++ b/development/create-static-server.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 const http = require('http');
 const path = require('path');
 
diff --git a/development/generate-lavamoat-policies.js b/development/generate-lavamoat-policies.js
old mode 100644
new mode 100755
index 3f8ecf1e0..4ac600636
--- a/development/generate-lavamoat-policies.js
+++ b/development/generate-lavamoat-policies.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 const concurrently = require('concurrently');
 const yargs = require('yargs/yargs');
 const { hideBin } = require('yargs/helpers');
diff --git a/development/missing-locale-strings.js b/development/missing-locale-strings.js
old mode 100644
new mode 100755
index 387e13501..4bf60552d
--- a/development/missing-locale-strings.js
+++ b/development/missing-locale-strings.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 // //////////////////////////////////////////////////////////////////////////////
 //
 // Reports on missing localized strings
diff --git a/development/mock-segment.js b/development/mock-segment.js
old mode 100644
new mode 100755
index 347bc6fa7..9d11738de
--- a/development/mock-segment.js
+++ b/development/mock-segment.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 const { createSegmentServer } = require('./lib/create-segment-server');
 const { parsePort } = require('./lib/parse-port');
 
diff --git a/development/sentry-publish.js b/development/sentry-publish.js
old mode 100644
new mode 100755
diff --git a/development/show-deps-install-scripts.js b/development/show-deps-install-scripts.js
old mode 100644
new mode 100755
index dca698b10..f84bab6f5
--- a/development/show-deps-install-scripts.js
+++ b/development/show-deps-install-scripts.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 // This script lists all dependencies that have package install scripts
 const path = require('path');
 const readInstalled = require('read-installed');
diff --git a/development/sourcemap-validator.js b/development/sourcemap-validator.js
old mode 100644
new mode 100755
index 0531a03ce..87c74a123
--- a/development/sourcemap-validator.js
+++ b/development/sourcemap-validator.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 const fs = require('fs');
 const path = require('path');
 const { SourceMapConsumer } = require('source-map');
diff --git a/development/static-server.js b/development/static-server.js
old mode 100644
new mode 100755
index de994aec3..facdc915b
--- a/development/static-server.js
+++ b/development/static-server.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 const fs = require('fs');
 const path = require('path');
 
diff --git a/development/verify-locale-strings.js b/development/verify-locale-strings.js
old mode 100644
new mode 100755
index 7044d68ec..26b01ad89
--- a/development/verify-locale-strings.js
+++ b/development/verify-locale-strings.js
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 // //////////////////////////////////////////////////////////////////////////////
 //
 // Locale verification script
diff --git a/test/e2e/benchmark.js b/test/e2e/benchmark.js
old mode 100644
new mode 100755
diff --git a/test/e2e/lavamoat-stats.js b/test/e2e/lavamoat-stats.js
old mode 100644
new mode 100755
diff --git a/test/e2e/mv3-perf-stats/bundle-size.js b/test/e2e/mv3-perf-stats/bundle-size.js
old mode 100644
new mode 100755
diff --git a/test/e2e/mv3-perf-stats/init-load-stats.js b/test/e2e/mv3-perf-stats/init-load-stats.js
old mode 100644
new mode 100755
diff --git a/test/e2e/mv3-stats.js b/test/e2e/mv3-stats.js
old mode 100644
new mode 100755