diff --git a/package-lock.json b/package-lock.json
index ecab6ab1..867fdd33 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1961,14 +1961,6 @@
         }
       }
     },
-    "node_modules/@shopify/semaphore": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/@shopify/semaphore/-/semaphore-3.1.0.tgz",
-      "integrity": "sha512-LxonkiWEu12FbZhuOMhsdocpxCqm7By8C/2U9QgNuEoXUx2iMrlXjJv3p93RwfNC6TrdlNRo17gRer1z1309VQ==",
-      "engines": {
-        "node": ">=18.12.0"
-      }
-    },
     "node_modules/@sinonjs/commons": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-3.0.1.tgz",
@@ -3078,6 +3070,15 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/async-mutex": {
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/async-mutex/-/async-mutex-0.5.0.tgz",
+      "integrity": "sha512-1A94B18jkJ3DYq284ohPxoXbfTA5HsQ7/Mf4DEhcyLx3Bz27Rh59iScbB6EPiP+B+joue6YCxcMXSbFC1tZKwA==",
+      "license": "MIT",
+      "dependencies": {
+        "tslib": "^2.4.0"
+      }
+    },
     "node_modules/async-retry": {
       "version": "1.3.3",
       "dev": true,
@@ -6201,8 +6202,8 @@
       "license": "MIT",
       "dependencies": {
         "@aws-sdk/client-s3": "^3.758.0",
-        "@shopify/semaphore": "^3.1.0",
         "@tus/utils": "^0.7.0",
+        "async-mutex": "^0.5.0",
         "debug": "^4.3.4",
         "multistream": "^4.1.0"
       },
diff --git a/packages/s3-store/package.json b/packages/s3-store/package.json
index ba034d2a..6e4efe07 100644
--- a/packages/s3-store/package.json
+++ b/packages/s3-store/package.json
@@ -22,8 +22,8 @@
   },
   "dependencies": {
     "@aws-sdk/client-s3": "^3.758.0",
-    "@shopify/semaphore": "^3.1.0",
     "@tus/utils": "^0.7.0",
+    "async-mutex": "^0.5.0",
     "debug": "^4.3.4",
     "multistream": "^4.1.0"
   },
diff --git a/packages/s3-store/src/index.ts b/packages/s3-store/src/index.ts
index 9e63d68a..68f7b956 100644
--- a/packages/s3-store/src/index.ts
+++ b/packages/s3-store/src/index.ts
@@ -17,7 +17,7 @@ import {
   MemoryKvStore,
 } from '@tus/utils'
 
-import {Semaphore, type Permit} from '@shopify/semaphore'
+import {Semaphore} from 'async-mutex'
 import MultiStream from 'multistream'
 import crypto from 'node:crypto'
 import path from 'node:path'
@@ -369,14 +369,15 @@ export class S3Store extends DataStore {
     const promises: Promise<void>[] = []
     let pendingChunkFilepath: string | null = null
     let bytesUploaded = 0
-    let permit: Permit | undefined
+    let releasePermit: (() => void) | undefined
 
     const splitterStream = new StreamSplitter({
       chunkSize: this.calcOptimalPartSize(size),
       directory: os.tmpdir(),
     })
       .on('beforeChunkStarted', async () => {
-        permit = await this.partUploadSemaphore.acquire()
+        const [, release] = await this.partUploadSemaphore.acquire()
+        releasePermit = release
       })
       .on('chunkStarted', (filepath) => {
         pendingChunkFilepath = filepath
@@ -384,7 +385,7 @@ export class S3Store extends DataStore {
       .on('chunkFinished', ({path, size: partSize}) => {
         pendingChunkFilepath = null
 
-        const acquiredPermit = permit
+        const acquiredRelease = releasePermit
         const partNumber = currentPartNumber++
 
         offset += partSize
@@ -415,9 +416,7 @@ export class S3Store extends DataStore {
             fsProm.rm(path).catch(() => {
               /* ignore */
             })
-            acquiredPermit?.release().catch(() => {
-              /* ignore */
-            })
+            acquiredRelease?.()
           }
         })
 
@@ -430,9 +429,7 @@ export class S3Store extends DataStore {
         promises.push(deferred)
       })
       .on('chunkError', () => {
-        permit?.release().catch(() => {
-          /* ignore */
-        })
+        releasePermit?.()
       })
 
     try {