diff --git a/CHANGELOG.md b/CHANGELOG.md
index dcbdd68f..b99cd8ba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# 4.0.1
+* Fix left-shift numerical problem in static frontend projection via @saranrapjs [#171]
+
 # 4.0.0
 * switch to tsup for generating ESM, CJS and IIFE modules [#158, #161, #162].
 * should fix import issues related to typescript.
diff --git a/benchmark/index.html b/benchmark/index.html
index a3cc8a35..c875bece 100644
--- a/benchmark/index.html
+++ b/benchmark/index.html
@@ -6,7 +6,7 @@
         <meta name="viewport" content="width=device-width, initial-scale=1">
         <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
         <script src="pixelmatch.js"></script>
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
         <style>
             html {
diff --git a/examples/comparison.html b/examples/comparison.html
index d03d4c5c..94c098bd 100644
--- a/examples/comparison.html
+++ b/examples/comparison.html
@@ -9,7 +9,7 @@
         <link rel="stylesheet" href="https://unpkg.com/maplibre-gl@3.3.1/dist/maplibre-gl.css" crossorigin="anonymous">
         <script src="https://unpkg.com/maplibre-gl@3.3.1/dist/maplibre-gl.js" crossorigin="anonymous"></script>
         <script src="https://unpkg.com/@maplibre/maplibre-gl-leaflet@0.0.20/leaflet-maplibre-gl.js"></script>
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
         <style>
             #parent {
diff --git a/examples/fonts.html b/examples/fonts.html
index e6ff13aa..7b9dd7a1 100644
--- a/examples/fonts.html
+++ b/examples/fonts.html
@@ -5,7 +5,7 @@
         <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"/>
         <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
         <script src="https://unpkg.com/leaflet-hash@0.2.1/leaflet-hash.js"></script>
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
 
         <link href="https://fonts.googleapis.com/css2?family=Inter:wght@100..900&family=Work+Sans:wght@100..900&family=Petrona:wght@100..900&family=Raleway:wght@100..900" rel="stylesheet">
diff --git a/examples/inset.html b/examples/inset.html
index 2fc009d7..87442670 100644
--- a/examples/inset.html
+++ b/examples/inset.html
@@ -2,7 +2,7 @@
     <head>
         <meta charset="utf-8" />
         <meta name="viewport" content="width=device-width, initial-scale=1">
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
         <style>
             #map {
diff --git a/examples/labels.html b/examples/labels.html
index 1731eacb..f85dbea1 100644
--- a/examples/labels.html
+++ b/examples/labels.html
@@ -5,7 +5,7 @@
         <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"/>
         <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
         <script src="https://unpkg.com/leaflet-hash@0.2.1/leaflet-hash.js"></script>
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
         <style>
             body, #map {
diff --git a/examples/leaflet.html b/examples/leaflet.html
index a9d6c1c4..7ff610e3 100644
--- a/examples/leaflet.html
+++ b/examples/leaflet.html
@@ -5,7 +5,7 @@
         <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"/>
         <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
         <script src="https://unpkg.com/leaflet-hash@0.2.1/leaflet-hash.js"></script>
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
         <style>
             body, #map {
diff --git a/examples/multi_source.html b/examples/multi_source.html
index 65044335..4018f3f8 100644
--- a/examples/multi_source.html
+++ b/examples/multi_source.html
@@ -5,7 +5,7 @@
         <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"/>
         <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
         <script src="https://unpkg.com/leaflet-hash@0.2.1/leaflet-hash.js"></script>
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
         <style>
             body, #map {
diff --git a/examples/pmtiles.html b/examples/pmtiles.html
index d1787fc5..c2e41c01 100644
--- a/examples/pmtiles.html
+++ b/examples/pmtiles.html
@@ -4,7 +4,7 @@
         <meta name="viewport" content="width=device-width, initial-scale=1">
         <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"/>
         <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
         <style>
             body, #map {
diff --git a/examples/pmtiles_headers.html b/examples/pmtiles_headers.html
index 4862c4b5..5615f489 100644
--- a/examples/pmtiles_headers.html
+++ b/examples/pmtiles_headers.html
@@ -5,7 +5,7 @@
         <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"/>
         <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
         <script src="https://unpkg.com/pmtiles@3.0.3/dist/pmtiles.js"></script>
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
         <style>
             body, #map {
diff --git a/examples/sandwich.html b/examples/sandwich.html
index 158641c7..984ba7b8 100644
--- a/examples/sandwich.html
+++ b/examples/sandwich.html
@@ -5,7 +5,7 @@
         <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"/>
         <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
         <script src="https://unpkg.com/leaflet-hash@0.2.1/leaflet-hash.js"></script>
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
         <style>
             body, #map {
diff --git a/examples/sprites.html b/examples/sprites.html
index fdd79fb8..6544cef2 100644
--- a/examples/sprites.html
+++ b/examples/sprites.html
@@ -5,7 +5,7 @@
         <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"/>
         <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
         <script src="https://unpkg.com/leaflet-hash@0.2.1/leaflet-hash.js"></script>
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
         <style>
             body, #map {
diff --git a/examples/static.html b/examples/static.html
index a5723593..60a7a058 100644
--- a/examples/static.html
+++ b/examples/static.html
@@ -2,7 +2,7 @@
     <head>
         <meta charset="utf-8" />
         <meta name="viewport" content="width=device-width, initial-scale=1">
-        <script src="https://unpkg.com/protomaps-leaflet@4.0.0/dist/protomaps-leaflet.js"></script>
+        <script src="https://unpkg.com/protomaps-leaflet@4.0.1/dist/protomaps-leaflet.js"></script>
         <!-- <script src="../dist/protomaps-leaflet.js"></script> -->
         <style>
             #map {
diff --git a/package-lock.json b/package-lock.json
index d8228eea..81aa9b74 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "protomaps-leaflet",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "protomaps-leaflet",
-      "version": "4.0.0",
+      "version": "4.0.1",
       "license": "BSD-3-Clause",
       "dependencies": {
         "@mapbox/point-geometry": "^1.1.0",
diff --git a/package.json b/package.json
index 497d74ce..844edad9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "protomaps-leaflet",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "files": [
     "dist",
     "src"
diff --git a/tsup.config.ts b/tsup.config.ts
index a1140d27..bcf7a77a 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -18,14 +18,14 @@ export default [
     entry: ["src/index.ts"],
     outDir: "dist/cjs",
     format: "cjs",
-    dts: true
+    dts: true,
   }),
   defineConfig({
     ...baseOptions,
     entry: ["src/index.ts"],
     outDir: "dist/esm",
     format: "esm",
-    dts: true
+    dts: true,
   }),
   defineConfig({
     ...baseOptions,
@@ -33,10 +33,10 @@ export default [
     format: "iife",
     globalName: "protomapsL",
     entry: {
-      'protomaps-leaflet': 'src/index.ts'
+      "protomaps-leaflet": "src/index.ts",
     },
     outExtension: () => {
-      return {js:".js"}
-    }
-  })
-];
\ No newline at end of file
+      return { js: ".js" };
+    },
+  }),
+];
