diff --git a/app/main.dev.js b/app/main.dev.js
index b3efbef5d..39152600a 100755
--- a/app/main.dev.js
+++ b/app/main.dev.js
@@ -273,11 +273,16 @@ operating system, as soon as possible.`,
 
   mainWindow.webContents.session.on('select-serial-port', (event, portList, webContents, callback) => {
     event.preventDefault();
+    portList = portList.filter(port => (
+      // filter out signature pads
+      port.serialNumber !== 'TOPAZBSB' &&
+      !(typeof port.deviceInstanceId === 'string' && port.deviceInstanceId.includes('TOPAZBSB'))
+    ));
     console.log('Port list:', portList);
 
     let selectedPort;
     for (let i = 0; i < serialPortFilter.length; i++) {
-      selectedPort = portList.find((element) => 
+      selectedPort = portList.find((element) =>
         serialPortFilter[i].usbVendorId === parseInt(element.vendorId, 10) &&
         serialPortFilter[i].usbProductId === parseInt(element.productId, 10)
       );
@@ -717,7 +722,7 @@ if (!gotTheLock) {
       return handleIncomingUrl(url);
     }
   });
-  
+
   // Protocol handler for osx
   app.on('open-url', (event, url) => {
     event.preventDefault();
@@ -733,4 +738,4 @@ function getURLFromArgs(args) {
     }
   }
   return undefined;
-}
\ No newline at end of file
+}
diff --git a/app/package.json b/app/package.json
index cb1089b9d..179f2b43e 100644
--- a/app/package.json
+++ b/app/package.json
@@ -1,7 +1,7 @@
 {
   "name": "tidepool-uploader",
   "productName": "tidepool-uploader",
-  "version": "2.59.1-ultra-plus-flex.3",
+  "version": "2.59.1-filter-signature-pads.2",
   "description": "Tidepool Project Universal Uploader",
   "main": "./main.prod.js",
   "author": {
diff --git a/package.json b/package.json
index 5c3c99aea..821db251a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tidepool-uploader",
-  "version": "2.59.1-ultra-plus-flex.3",
+  "version": "2.59.1-filter-signature-pads.2",
   "description": "Tidepool Project Universal Uploader",
   "private": true,
   "main": "main.prod.js",