diff --git a/npm-packages/meteor-rspack/lib/mergeRulesSplitOverlap.js b/npm-packages/meteor-rspack/lib/mergeRulesSplitOverlap.js
index d36e5a64a4..9223e87e96 100644
--- a/npm-packages/meteor-rspack/lib/mergeRulesSplitOverlap.js
+++ b/npm-packages/meteor-rspack/lib/mergeRulesSplitOverlap.js
@@ -55,7 +55,7 @@ function ruleMatchesExt(rule, ext) {
  */
 function regexFromExts(exts) {
   const body = exts.map(e => e.replace(/^\./, '')).join('|');
-  return new RegExp(`\\.(${body})$`);
+  return new RegExp(`\\.(${body})$`, 'i');
 }
 
 /**
diff --git a/npm-packages/meteor-rspack/package-lock.json b/npm-packages/meteor-rspack/package-lock.json
index f9b046a840..21cb1b9ce4 100644
--- a/npm-packages/meteor-rspack/package-lock.json
+++ b/npm-packages/meteor-rspack/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@meteorjs/rspack",
-  "version": "0.0.14",
+  "version": "0.0.15",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@meteorjs/rspack",
-      "version": "0.0.14",
+      "version": "0.0.15",
       "license": "ISC",
       "dependencies": {
         "ignore-loader": "^0.1.2",
diff --git a/npm-packages/meteor-rspack/package.json b/npm-packages/meteor-rspack/package.json
index 30e3e26a30..9221b253e1 100644
--- a/npm-packages/meteor-rspack/package.json
+++ b/npm-packages/meteor-rspack/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@meteorjs/rspack",
-  "version": "0.0.14",
+  "version": "0.0.15",
   "description": "Configuration logic for using Rspack in Meteor projects",
   "main": "index.js",
   "type": "module",
diff --git a/npm-packages/meteor-rspack/rspack.config.js b/npm-packages/meteor-rspack/rspack.config.js
index efc6fe4607..bcb58d75a7 100644
--- a/npm-packages/meteor-rspack/rspack.config.js
+++ b/npm-packages/meteor-rspack/rspack.config.js
@@ -77,7 +77,7 @@ function createSwcConfig({ isTypescriptEnabled, isJsxEnabled, isTsxEnabled, exte
 // Coffeescript rule
 function createCoffeescriptConfig({ swcConfig }) {
   return {
-    test: /\.coffee$/,
+    test: /\.coffee$/i,
     use: [
       {
         loader: 'swc-loader',
@@ -231,7 +231,7 @@ export default function (inMeteor = {}, argv = {}) {
         ...(Meteor.isBlazeEnabled
           ? [
               {
-                test: /\.html$/,
+                test: /\.html$/i,
                 loader: 'ignore-loader',
               },
             ]