diff --git a/package-lock.json b/package-lock.json
index 177dd41..b25cdc1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,6 @@
         "commander": "11.0.0",
         "cors": "2.8.5",
         "express": "4.18.2",
-        "fflate": "^0.8.1",
         "handlebars": "4.7.8",
         "http-shutdown": "1.2.2",
         "morgan": "1.10.0",
diff --git a/package.json b/package.json
index c0bcc2c..bce471c 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,6 @@
     "commander": "11.0.0",
     "cors": "2.8.5",
     "express": "4.18.2",
-    "fflate": "^0.8.1",
     "handlebars": "4.7.8",
     "http-shutdown": "1.2.2",
     "morgan": "1.10.0",
diff --git a/src/pmtiles_adapter.js b/src/pmtiles_adapter.js
index f71c931..c20a958 100644
--- a/src/pmtiles_adapter.js
+++ b/src/pmtiles_adapter.js
@@ -1,5 +1,5 @@
 import fs from 'node:fs';
-import * as fflate from 'fflate';
+import zlib from 'zlib';
 import PMTiles from 'pmtiles';
 
 export const GetPMtilesHeader = async (pmtilesFile) => {
@@ -185,7 +185,7 @@ export const GetPMtilesDecompress = async (header, buffer) => {
   ) {
     decompressed = buffer;
   } else if (compression === PMTiles.Compression.Gzip) {
-    decompressed = fflate.decompressSync(new Uint8Array(buffer));
+    decompressed = zlib.unzipSync(buffer);
   } else {
     throw Error('Compression method not supported');
   }