diff --git a/package.json b/package.json
index 0fe0ab9..3f01e4a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "simai.js",
-    "version": "1.1.0",
+    "version": "1.1.1",
     "description": "A serializer/deserializer for the rhythm game chart format simai.",
     "main": "dist/index.js",
     "module": "dist/index.mjs",
@@ -40,14 +40,11 @@
     "homepage": "https://github.com/reflektone-games/simai.js#readme",
     "devDependencies": {
         "@types/mocha": "^10.0.6",
-        "@types/node": "^20.11.20",
+        "@types/node": "^20.11.21",
         "del-cli": "^5.1.0",
         "mocha": "^10.3.0",
         "ts-node": "^10.9.2",
         "tsup": "^8.0.2"
     },
-    "volta": {
-        "node": "20.11.1",
-        "pnpm": "8.15.3"
-    }
+    "packageManager": "pnpm@8.15.4"
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 7df087b..306d80f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -9,8 +9,8 @@ devDependencies:
     specifier: ^10.0.6
     version: 10.0.6
   '@types/node':
-    specifier: ^20.11.20
-    version: 20.11.20
+    specifier: ^20.11.21
+    version: 20.11.21
   del-cli:
     specifier: ^5.1.0
     version: 5.1.0
@@ -19,7 +19,7 @@ devDependencies:
     version: 10.3.0
   ts-node:
     specifier: ^10.9.2
-    version: 10.9.2(@types/node@20.11.20)(typescript@5.2.2)
+    version: 10.9.2(@types/node@20.11.21)(typescript@5.2.2)
   tsup:
     specifier: ^8.0.2
     version: 8.0.2(ts-node@10.9.2)(typescript@5.2.2)
@@ -445,8 +445,8 @@ packages:
     resolution: {integrity: sha512-dJvrYWxP/UcXm36Qn36fxhUKu8A/xMRXVT2cliFF1Z7UA9liG5Psj3ezNSZw+5puH2czDXRLcXQxf8JbJt0ejg==}
     dev: true
 
-  /@types/node@20.11.20:
-    resolution: {integrity: sha512-7/rR21OS+fq8IyHTgtLkDK949uzsa6n8BkziAKtPVpugIkO6D+/ooXMvzXxDnZrmtXVfjb1bKQafYpb8s89LOg==}
+  /@types/node@20.11.21:
+    resolution: {integrity: sha512-/ySDLGscFPNasfqStUuWWPfL78jompfIoVzLJPVVAHBh6rpG68+pI2Gk+fNLeI8/f1yPYL4s46EleVIc20F1Ow==}
     dependencies:
       undici-types: 5.26.5
     dev: true
@@ -1399,7 +1399,7 @@ packages:
         optional: true
     dependencies:
       lilconfig: 2.1.0
-      ts-node: 10.9.2(@types/node@20.11.20)(typescript@5.2.2)
+      ts-node: 10.9.2(@types/node@20.11.21)(typescript@5.2.2)
       yaml: 2.3.4
     dev: true
 
@@ -1689,7 +1689,7 @@ packages:
     resolution: {integrity: sha512-Y/arvbn+rrz3JCKl9C4kVNfTfSm2/mEp5FSz5EsZSANGPSlQrpRI5M4PKF+mJnE52jOO90PnPSc3Ur3bTQw0gA==}
     dev: true
 
-  /ts-node@10.9.2(@types/node@20.11.20)(typescript@5.2.2):
+  /ts-node@10.9.2(@types/node@20.11.21)(typescript@5.2.2):
     resolution: {integrity: sha512-f0FFpIdcHgn8zcPSbf1dRevwt047YMnaiJM3u2w2RewrB+fob/zePZcrOyQoLMMO7aBIddLcQIEK5dYjkLnGrQ==}
     hasBin: true
     peerDependencies:
@@ -1708,7 +1708,7 @@ packages:
       '@tsconfig/node12': 1.0.11
       '@tsconfig/node14': 1.0.3
       '@tsconfig/node16': 1.0.4
-      '@types/node': 20.11.20
+      '@types/node': 20.11.21
       acorn: 8.11.2
       acorn-walk: 8.3.0
       arg: 4.1.3