diff --git a/packages/backend/package.json b/packages/backend/package.json
index c5b6278b6..b9995d811 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -100,6 +100,7 @@
 		"hpagent": "1.2.0",
 		"ioredis": "5.3.2",
 		"ip-cidr": "3.1.0",
+		"ipaddr.js": "2.1.0",
 		"is-svg": "4.3.2",
 		"js-yaml": "4.1.0",
 		"jsdom": "22.1.0",
@@ -120,7 +121,6 @@
 		"otpauth": "9.1.2",
 		"parse5": "7.1.2",
 		"pg": "8.11.0",
-		"private-ip": "3.0.0",
 		"probe-image-size": "7.2.3",
 		"promise-limit": "2.7.0",
 		"pug": "3.0.2",
diff --git a/packages/backend/src/core/DownloadService.ts b/packages/backend/src/core/DownloadService.ts
index bd535c603..09039a8b5 100644
--- a/packages/backend/src/core/DownloadService.ts
+++ b/packages/backend/src/core/DownloadService.ts
@@ -2,8 +2,7 @@ import * as fs from 'node:fs';
 import * as stream from 'node:stream';
 import * as util from 'node:util';
 import { Inject, Injectable } from '@nestjs/common';
-import IPCIDR from 'ip-cidr';
-import PrivateIp from 'private-ip';
+import ipaddr from 'ipaddr.js';
 import chalk from 'chalk';
 import got, * as Got from 'got';
 import { parse } from 'content-disposition';
@@ -123,15 +122,15 @@ export class DownloadService {
 	public async downloadTextFile(url: string): Promise<string> {
 		// Create temp file
 		const [path, cleanup] = await createTemp();
-	
+
 		this.logger.info(`text file: Temp file is ${path}`);
-	
+
 		try {
 			// write content at URL to temp file
 			await this.downloadUrl(url, path);
-	
+
 			const text = await util.promisify(fs.readFile)(path, 'utf8');
-	
+
 			return text;
 		} finally {
 			cleanup();
@@ -140,13 +139,14 @@ export class DownloadService {
 
 	@bindThis
 	private isPrivateIp(ip: string): boolean {
+		const parsedIp = ipaddr.parse(ip);
+
 		for (const net of this.config.allowedPrivateNetworks ?? []) {
-			const cidr = new IPCIDR(net);
-			if (cidr.contains(ip)) {
+			if (parsedIp.match(ipaddr.parseCIDR(net))) {
 				return false;
 			}
 		}
 
-		return PrivateIp(ip) ?? false;
+		return parsedIp.range() !== 'unicast';
 	}
 }
diff --git a/packages/backend/src/misc/get-ip-hash.ts b/packages/backend/src/misc/get-ip-hash.ts
index 70e61aef8..1a86fb881 100644
--- a/packages/backend/src/misc/get-ip-hash.ts
+++ b/packages/backend/src/misc/get-ip-hash.ts
@@ -1,6 +1,6 @@
 import IPCIDR from 'ip-cidr';
 
-export function getIpHash(ip: string) {
+export function getIpHash(ip: string): string {
 	try {
 		// because a single person may control many IPv6 addresses,
 		// only a /64 subnet prefix of any IP will be taken into account.
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 2259cb2a2..97f9a9583 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -215,6 +215,9 @@ importers:
       ip-cidr:
         specifier: 3.1.0
         version: 3.1.0
+      ipaddr.js:
+        specifier: 2.1.0
+        version: 2.1.0
       is-svg:
         specifier: 4.3.2
         version: 4.3.2
@@ -275,9 +278,6 @@ importers:
       pg:
         specifier: 8.11.0
         version: 8.11.0
-      private-ip:
-        specifier: 3.0.0
-        version: 3.0.0
       probe-image-size:
         specifier: 7.2.3
         version: 7.2.3
@@ -4387,10 +4387,6 @@ packages:
     resolution: {integrity: sha512-BxOqI5LgsIQP1odU5KMwV9yoijleOPzHL18/YvNqF9KFSGF2K/DLlYAbDQsWqd/1nbaFuSkYD/191dpMtNh4vw==}
     dev: false
 
-  /@chainsafe/is-ip@2.0.1:
-    resolution: {integrity: sha512-nqSJ8u2a1Rv9FYbyI8qpDhTYujaKEyLknNrTejLYoSWmdeg+2WB7R6BZqPZYfrJzDxVi3rl6ZQuoaEvpKRZWgQ==}
-    dev: false
-
   /@colors/colors@1.5.0:
     resolution: {integrity: sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ==}
     engines: {node: '>=0.1.90'}
@@ -13539,11 +13535,6 @@ packages:
     resolution: {integrity: sha512-B9ZWJxHHOHUhUjCPrMpLD4xEq35bUTClHM1S6CBU5ixQnkZmwipwgc96vAd7AAGM9TGHvJR+Uss+/Ak6UphK+Q==}
     engines: {node: '>=8'}
 
-  /ip-regex@5.0.0:
-    resolution: {integrity: sha512-fOCG6lhoKKakwv+C6KdsOnGvgXnmgfmp0myi3bcNwj3qfwPAxRKWEuFhvEFF7ceYIz6+1jRZ+yguLFAmUNPEfw==}
-    engines: {node: ^12.20.0 || ^14.13.1 || >=16.0.0}
-    dev: false
-
   /ip@2.0.0:
     resolution: {integrity: sha512-WKa+XuLG1A1R0UWhl2+1XQSi+fZWMsYKffMZTTYsiZaUD8k2yDAj5atimTUD2TZkyCkNEeYE5NhFZmupOGtjYQ==}
 
@@ -13551,8 +13542,8 @@ packages:
     resolution: {integrity: sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g==}
     engines: {node: '>= 0.10'}
 
-  /ipaddr.js@2.0.1:
-    resolution: {integrity: sha512-1qTgH9NG+IIJ4yfKs2e6Pp1bZg8wbDbKHT21HrLIeYBTRLgMYKnMTPAuI3Lcs61nfx5h1xlXnbJtH1kX5/d/ng==}
+  /ipaddr.js@2.1.0:
+    resolution: {integrity: sha512-LlbxQ7xKzfBusov6UMi4MFpEg0m+mAm9xyNGEduwXMEDuf4WfzB/RZwMVYEd7IKGvh4IUkEXYxtAVu9T3OelJQ==}
     engines: {node: '>= 10'}
 
   /irregular-plurals@3.5.0:
@@ -17315,20 +17306,10 @@ packages:
     resolution: {integrity: sha512-5zyFfekIVUOTVbL92hc8LJOtE/gyGHeREHkJ2yTyByP8Q2YZVoBqLg3EfYLeF0oVvGqtaEX2t2Qovja0/gStXw==}
     dependencies:
       ip-regex: 4.3.0
-      ipaddr.js: 2.0.1
+      ipaddr.js: 2.1.0
       is-ip: 3.1.0
       netmask: 2.0.2
 
-  /private-ip@3.0.0:
-    resolution: {integrity: sha512-HkMBs4nMtrP+cvcw0bDi2BAZIGgiKI4Zq8Oc+dMqNBpHS8iGL4+WO/pRtc8Bwnv9rjnV0QwMDwEBymFtqv7Kww==}
-    engines: {node: '>=14.16'}
-    dependencies:
-      '@chainsafe/is-ip': 2.0.1
-      ip-regex: 5.0.0
-      ipaddr.js: 2.0.1
-      netmask: 2.0.2
-    dev: false
-
   /probe-image-size@7.2.3:
     resolution: {integrity: sha512-HubhG4Rb2UH8YtV4ba0Vp5bQ7L78RTONYu/ujmCu5nBI8wGv24s4E9xSKBi0N1MowRpxk76pFCpJtW0KPzOK0w==}
     dependencies: