diff --git a/sites/dev/skip_build.js b/sites/dev/skip_build.mjs
similarity index 100%
rename from sites/dev/skip_build.js
rename to sites/dev/skip_build.mjs
diff --git a/sites/lab/skip_build.mjs b/sites/lab/skip_build.mjs
new file mode 100755
index 00000000000..72d98247126
--- /dev/null
+++ b/sites/lab/skip_build.mjs
@@ -0,0 +1,22 @@
+import process from 'node:process'
+
+// Do not block production builds
+if (process.env.VERCEL_ENV === 'production') {
+  console.log('✅ - Production build - Proceed to build')
+  process.exit(1)
+}
+
+// Do not build dependabot PRs
+if (process.env.VERCEL_GIT_COMMIT_AUTHOR_LOGIN === 'dependabot[bot]') {
+  console.log('🛑 - Dependebot PR - Do not build')
+  process.exit(0)
+}
+
+// Do not build anything that is not the develop branch
+if (process.env.VERCEL_GIT_COMMIT_REF === 'develop') {
+  console.log('✅ - develop build - Proceed to build')
+  process.exit(1)
+}
+
+console.log('🛑 - Unhandled case - Do not build')
+process.exit(0)
diff --git a/sites/lab/skip_build.sh b/sites/lab/skip_build.sh
deleted file mode 100755
index 466c0453183..00000000000
--- a/sites/lab/skip_build.sh
+++ /dev/null
@@ -1,39 +0,0 @@
-#!/bin/bash
-
-# Don't block production builds
-if [[ "$VERCEL_ENV" == "production" ]] ; then
-  echo "VERCEL_ENV: $VERCEL_ENV"
-  echo "✅ - Production build - Proceed to build"
-  exit 1;
-fi
-
-# Do not build dependabot PRs
-if [[ "$VERCEL_GIT_COMMIT_AUTHOR_LOGIN" == "dependabot[bot]" ]] ; then
-  echo "🛑 - Dependebot PR - Do not build"
-  exit 0;
-fi
-
-# Do not build dependabot PRs
-if [[ "$VERCEL_GIT_COMMIT_AUTHOR_LOGIN" == "dependabot[bot]" ]] ; then
-  echo "🛑 - Dependebot PR - Do not build"
-  exit 0;
-fi
-
-check=( \
-  "." \
-  "../../markdown/dev" \
-  "../freesewing.shared" \
-)
-build=0
-for d in ${check[@]}; do
-  if `git diff HEAD^ HEAD --quiet $d`; then
-    # We have changes, go ahead and build
-    echo "✅ - Changed detected in $d - Proceed to build"
-    exit 1;
-  fi
-done
-
-# No changes, do not waste time building this commit
-echo "🛑 - No changes detected - Do not build"
-exit 0;
-
diff --git a/sites/org/skip_build.js b/sites/org/skip_build.mjs
similarity index 100%
rename from sites/org/skip_build.js
rename to sites/org/skip_build.mjs
diff --git a/sites/sanity/skip_build.js b/sites/sanity/skip_build.mjs
similarity index 100%
rename from sites/sanity/skip_build.js
rename to sites/sanity/skip_build.mjs