diff --git a/package.json b/package.json
index 4b1c28e76..2f1f40a88 100644
--- a/package.json
+++ b/package.json
@@ -228,7 +228,12 @@
             "side-channel": "npm:@nolyfill/side-channel@^1"
         },
         "patchedDependencies": {
-            "eslint-nibble@8.1.0": "patches/eslint-nibble@8.1.0.patch"
+            "eslint-nibble@8.1.0": "patches/eslint-nibble@8.1.0.patch",
+            "@bbob/preset-html5@4.2.0": "patches/@bbob__preset-html5@4.2.0.patch",
+            "@bbob/core@4.2.0": "patches/@bbob__core@4.2.0.patch",
+            "@bbob/plugin-helper@4.2.0": "patches/@bbob__plugin-helper@4.2.0.patch",
+            "@bbob/preset@4.2.0": "patches/@bbob__preset@4.2.0.patch",
+            "@bbob/parser@4.2.0": "patches/@bbob__parser@4.2.0.patch"
         }
     }
 }
diff --git a/patches/@bbob__core@4.2.0.patch b/patches/@bbob__core@4.2.0.patch
new file mode 100644
index 000000000..b24832c9f
--- /dev/null
+++ b/patches/@bbob__core@4.2.0.patch
@@ -0,0 +1,13 @@
+diff --git a/es/index.js b/es/index.js
+index 16a08f3ae8f30b8184f5e6decefdc1f66b0f1b64..aa97d18a201b2121ab5f865c60d5de9f5913eae6 100644
+--- a/es/index.js
++++ b/es/index.js
+@@ -1,6 +1,6 @@
+ import { parse } from '@bbob/parser';
+-import { iterate, match } from './utils';
+-import { C1, C2 } from './errors';
++import { iterate, match } from './utils.js';
++import { C1, C2 } from './errors.js';
+ export function createTree(tree, options) {
+     const extendedTree = tree;
+     extendedTree.messages = [
diff --git a/patches/@bbob__parser@4.2.0.patch b/patches/@bbob__parser@4.2.0.patch
new file mode 100644
index 000000000..de49624c5
--- /dev/null
+++ b/patches/@bbob__parser@4.2.0.patch
@@ -0,0 +1,36 @@
+diff --git a/es/index.js b/es/index.js
+index 0a57e06d66aee0c7beff10aa10e761d022b7429e..7a852c7f42b7bc839ed849932d3dfc7cb4662f31 100644
+--- a/es/index.js
++++ b/es/index.js
+@@ -1,4 +1,4 @@
+ export { TagNode } from '@bbob/plugin-helper';
+-export { default } from './parse';
+-export * from './parse';
+-export * from './lexer';
++export { default } from './parse.js';
++export * from './parse.js';
++export * from './lexer.js';
+diff --git a/es/lexer.js b/es/lexer.js
+index 902594965355f31212cd7cedad6697829e144684..2ea20da6e1bd2a307b180d0b538884239c29b0b1 100644
+--- a/es/lexer.js
++++ b/es/lexer.js
+@@ -1,6 +1,6 @@
+ /* eslint-disable no-plusplus,no-param-reassign */ import { OPEN_BRAKET, CLOSE_BRAKET, QUOTEMARK, BACKSLASH, SLASH, SPACE, TAB, EQ, N } from '@bbob/plugin-helper';
+-import { Token, TYPE_ATTR_NAME, TYPE_ATTR_VALUE, TYPE_NEW_LINE, TYPE_SPACE, TYPE_TAG, TYPE_WORD } from './Token';
+-import { createCharGrabber, trimChar, unquote } from './utils';
++import { Token, TYPE_ATTR_NAME, TYPE_ATTR_VALUE, TYPE_NEW_LINE, TYPE_SPACE, TYPE_TAG, TYPE_WORD } from './Token.js';
++import { createCharGrabber, trimChar, unquote } from './utils.js';
+ // for cases <!-- -->
+ const EM = '!';
+ export function createTokenOfType(type, value, r = 0, cl = 0, p = 0, e = 0) {
+diff --git a/es/parse.js b/es/parse.js
+index f08044bf6033d209d79c3eae3db532d95e8c860c..81d170263a11a4896b67a3b3d310e9d5673db4c4 100644
+--- a/es/parse.js
++++ b/es/parse.js
+@@ -1,5 +1,5 @@
+ import { CLOSE_BRAKET, OPEN_BRAKET, TagNode, isTagNode } from "@bbob/plugin-helper";
+-import { createLexer } from "./lexer";
++import { createLexer } from "./lexer.js";
+ class NodeList {
+     last() {
+         if (Array.isArray(this.n) && this.n.length > 0 && typeof this.n[this.n.length - 1] !== "undefined") {
diff --git a/patches/@bbob__plugin-helper@4.2.0.patch b/patches/@bbob__plugin-helper@4.2.0.patch
new file mode 100644
index 000000000..867e2eb35
--- /dev/null
+++ b/patches/@bbob__plugin-helper@4.2.0.patch
@@ -0,0 +1,33 @@
+diff --git a/es/TagNode.js b/es/TagNode.js
+index d07d4cc7be7d9a3f9b0b82e7e20b0288be3518a3..255f7116432fe5e662004f769afd18a6a5be243d 100644
+--- a/es/TagNode.js
++++ b/es/TagNode.js
+@@ -1,5 +1,5 @@
+-import { OPEN_BRAKET, CLOSE_BRAKET, SLASH } from './char';
+-import { getUniqAttr, getNodeLength, appendToNode, attrsToString, attrValue, isTagNode } from './helpers';
++import { OPEN_BRAKET, CLOSE_BRAKET, SLASH } from './char.js';
++import { getUniqAttr, getNodeLength, appendToNode, attrsToString, attrValue, isTagNode } from './helpers.js';
+ const getTagAttrs = (tag, params)=>{
+     const uniqAttr = getUniqAttr(params);
+     if (uniqAttr) {
+diff --git a/es/helpers.js b/es/helpers.js
+index fbb27792e9ca04f460cb9d991df3803b8625c615..b10a9bb0d7ff51eb5ab9471b40d0055196c3ccf4 100644
+--- a/es/helpers.js
++++ b/es/helpers.js
+@@ -1,4 +1,4 @@
+-import { N } from './char';
++import { N } from './char.js';
+ function isTagNode(el) {
+     return typeof el === 'object' && el !== null && 'tag' in el;
+ }
+diff --git a/es/index.js b/es/index.js
+index 3cfcb823c11fa6fdc7cef636d2c2ab2299cf8137..40253efe6a03b0e0ccfc0defc59c8a45370c5c90 100644
+--- a/es/index.js
++++ b/es/index.js
+@@ -1,3 +1,3 @@
+-export * from "./helpers";
+-export * from "./char";
+-export * from "./TagNode";
++export * from "./helpers.js";
++export * from "./char.js";
++export * from "./TagNode.js";
diff --git a/patches/@bbob__preset-html5@4.2.0.patch b/patches/@bbob__preset-html5@4.2.0.patch
new file mode 100644
index 000000000..8e07982d4
--- /dev/null
+++ b/patches/@bbob__preset-html5@4.2.0.patch
@@ -0,0 +1,9 @@
+diff --git a/es/index.js b/es/index.js
+index 5f5546ed7af8a8072b4ed57fc2a1b930318ea033..03a4087da2750ef174ad99ea4e06b4ca0030b716 100644
+--- a/es/index.js
++++ b/es/index.js
+@@ -1,3 +1,3 @@
+ /* eslint-disable indent */ import { createPreset } from "@bbob/preset";
+-import defaultTags from "./defaultTags";
++import defaultTags from "./defaultTags.js";
+ export default createPreset(defaultTags);
diff --git a/patches/@bbob__preset@4.2.0.patch b/patches/@bbob__preset@4.2.0.patch
new file mode 100644
index 000000000..0a9e86143
--- /dev/null
+++ b/patches/@bbob__preset@4.2.0.patch
@@ -0,0 +1,9 @@
+diff --git a/es/index.js b/es/index.js
+index 15a762cc5dc6ed026fccd76d3d655370da689929..53024b46da00d822a283ba6a51aa0800fe2fd59b 100644
+--- a/es/index.js
++++ b/es/index.js
+@@ -1,2 +1,2 @@
+-export { default } from "./preset";
+-export * from "./preset";
++export { default } from "./preset.js";
++export * from "./preset.js";
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 111f4320e..4d20a20aa 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -14,6 +14,21 @@ overrides:
   side-channel: npm:@nolyfill/side-channel@^1
 
 patchedDependencies:
+  '@bbob/core@4.2.0':
+    hash: v4tqyuhmd7ie4kskej63wpyoyy
+    path: patches/@bbob__core@4.2.0.patch
+  '@bbob/parser@4.2.0':
+    hash: 3jkidu2qub3svpiz24dcdrhuey
+    path: patches/@bbob__parser@4.2.0.patch
+  '@bbob/plugin-helper@4.2.0':
+    hash: 35vhlnm6zfsrye6wm5mvcuoqkq
+    path: patches/@bbob__plugin-helper@4.2.0.patch
+  '@bbob/preset-html5@4.2.0':
+    hash: 45t5oyykiv4ibbpruba4shbkca
+    path: patches/@bbob__preset-html5@4.2.0.patch
+  '@bbob/preset@4.2.0':
+    hash: hzdlptpstii55wqx3v2binf4i4
+    path: patches/@bbob__preset@4.2.0.patch
   eslint-nibble@8.1.0:
     hash: w5z6jxwjps4t4gxnmmngw67gmm
     path: patches/eslint-nibble@8.1.0.patch
@@ -27,7 +42,7 @@ importers:
         version: 4.2.0
       '@bbob/preset-html5':
         specifier: 4.2.0
-        version: 4.2.0
+        version: 4.2.0(patch_hash=45t5oyykiv4ibbpruba4shbkca)
       '@hono/node-server':
         specifier: 1.14.2
         version: 1.14.2(hono@4.7.10)
@@ -7146,36 +7161,36 @@ snapshots:
       '@babel/helper-string-parser': 7.27.1
       '@babel/helper-validator-identifier': 7.27.1
 
-  '@bbob/core@4.2.0':
+  '@bbob/core@4.2.0(patch_hash=v4tqyuhmd7ie4kskej63wpyoyy)':
     dependencies:
-      '@bbob/parser': 4.2.0
-      '@bbob/plugin-helper': 4.2.0
+      '@bbob/parser': 4.2.0(patch_hash=3jkidu2qub3svpiz24dcdrhuey)
+      '@bbob/plugin-helper': 4.2.0(patch_hash=35vhlnm6zfsrye6wm5mvcuoqkq)
       '@bbob/types': 4.2.0
 
   '@bbob/html@4.2.0':
     dependencies:
-      '@bbob/core': 4.2.0
-      '@bbob/plugin-helper': 4.2.0
+      '@bbob/core': 4.2.0(patch_hash=v4tqyuhmd7ie4kskej63wpyoyy)
+      '@bbob/plugin-helper': 4.2.0(patch_hash=35vhlnm6zfsrye6wm5mvcuoqkq)
       '@bbob/types': 4.2.0
 
-  '@bbob/parser@4.2.0':
+  '@bbob/parser@4.2.0(patch_hash=3jkidu2qub3svpiz24dcdrhuey)':
     dependencies:
-      '@bbob/plugin-helper': 4.2.0
+      '@bbob/plugin-helper': 4.2.0(patch_hash=35vhlnm6zfsrye6wm5mvcuoqkq)
       '@bbob/types': 4.2.0
 
-  '@bbob/plugin-helper@4.2.0':
+  '@bbob/plugin-helper@4.2.0(patch_hash=35vhlnm6zfsrye6wm5mvcuoqkq)':
     dependencies:
       '@bbob/types': 4.2.0
 
-  '@bbob/preset-html5@4.2.0':
+  '@bbob/preset-html5@4.2.0(patch_hash=45t5oyykiv4ibbpruba4shbkca)':
     dependencies:
-      '@bbob/plugin-helper': 4.2.0
-      '@bbob/preset': 4.2.0
+      '@bbob/plugin-helper': 4.2.0(patch_hash=35vhlnm6zfsrye6wm5mvcuoqkq)
+      '@bbob/preset': 4.2.0(patch_hash=hzdlptpstii55wqx3v2binf4i4)
       '@bbob/types': 4.2.0
 
-  '@bbob/preset@4.2.0':
+  '@bbob/preset@4.2.0(patch_hash=hzdlptpstii55wqx3v2binf4i4)':
     dependencies:
-      '@bbob/plugin-helper': 4.2.0
+      '@bbob/plugin-helper': 4.2.0(patch_hash=35vhlnm6zfsrye6wm5mvcuoqkq)
       '@bbob/types': 4.2.0
 
   '@bbob/types@4.2.0': {}