diff --git a/packages/backend/package.json b/packages/backend/package.json
index 57f718210f..76a17cc88c 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -79,7 +79,7 @@
 		"@fastify/multipart": "8.1.0",
 		"@fastify/static": "6.12.0",
 		"@fastify/view": "8.2.0",
-		"@misskey-dev/node-http-message-signatures": "0.0.7",
+		"@misskey-dev/node-http-message-signatures": "0.0.8",
 		"@misskey-dev/sharp-read-bmp": "1.2.0",
 		"@misskey-dev/summaly": "5.0.3",
 		"@nestjs/common": "10.3.3",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index f853e68f6a..99195bbfc7 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -111,8 +111,8 @@ importers:
         specifier: 8.2.0
         version: 8.2.0
       '@misskey-dev/node-http-message-signatures':
-        specifier: 0.0.7
-        version: 0.0.7
+        specifier: 0.0.8
+        version: 0.0.8
       '@misskey-dev/sharp-read-bmp':
         specifier: 1.2.0
         version: 1.2.0
@@ -4754,11 +4754,12 @@ packages:
       eslint-plugin-import: 2.29.1(@typescript-eslint/parser@7.1.0)(eslint@8.57.0)
     dev: true
 
-  /@misskey-dev/node-http-message-signatures@0.0.7:
-    resolution: {integrity: sha512-NmXxPZGHtNniKMaAhLDoA+jrnubLqYmjdbzDzQVieaCTqAT0sn0Mg+IyHbfDR4+kePUSKMBQIeM1YNJWextFtA==}
+  /@misskey-dev/node-http-message-signatures@0.0.8:
+    resolution: {integrity: sha512-ymyjluFpY2xK/3UYyj+MiRfA7752BIWwSb+uFU0mFK1Yq2fGI6lAGZg3+D2lD8W/OkltnMQm1gSOXzE3CNIgtA==}
     engines: {node: '>=18.4.0'}
     dependencies:
       '@lapo/asn1js': 1.2.4
+      rfc4648: 1.5.3
       structured-headers: 1.0.1
     dev: false
 
@@ -17349,6 +17350,10 @@ packages:
     resolution: {integrity: sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==}
     engines: {iojs: '>=1.0.0', node: '>=0.10.0'}
 
+  /rfc4648@1.5.3:
+    resolution: {integrity: sha512-MjOWxM065+WswwnmNONOT+bD1nXzY9Km6u3kzvnx8F8/HXGZdz3T6e6vZJ8Q/RIMUSp/nxqjH3GwvJDy8ijeQQ==}
+    dev: false
+
   /rfdc@1.3.0:
     resolution: {integrity: sha512-V2hovdzFbOi77/WajaSMXk2OLm+xNIeQdMMuB7icj7bk6zi2F8GGAxigcnDFpJHbNyNcgyJDiP+8nOrY5cZGrA==}