diff --git a/package.json b/package.json
index 98e6990..c27cf16 100644
--- a/package.json
+++ b/package.json
@@ -43,76 +43,124 @@
   "exports": {
     ".": {
       "types": "./dist/src/index.d.ts",
-      "import": "./dist/src/index.js"
+      "import": "./dist/src/index.js",
+      "require": "./dist/cjs/src/index.js"
     },
     "./alloc": {
       "types": "./dist/src/alloc.d.ts",
-      "node": "./dist/src/alloc.node.js",
-      "import": "./dist/src/alloc.js"
+      "node": {
+        "import": "./dist/src/alloc.node.js",
+        "require": "./dist/cjs/src/alloc.node.js"
+      },
+      "import": "./dist/src/alloc.js",
+      "require": "./dist/cjs/src/alloc.js"
     },
     "./compare": {
       "types": "./dist/src/compare.d.ts",
-      "node": "./dist/src/compare.node.js",
-      "import": "./dist/src/compare.js"
+      "node": {
+        "import": "./dist/src/compare.node.js",
+        "require": "./dist/cjs/src/compare.node.js"
+      },
+      "import": "./dist/src/compare.js",
+      "require": "./dist/cjs/src/compare.js"
     },
     "./concat": {
       "types": "./dist/src/concat.d.ts",
-      "node": "./dist/src/concat.node.js",
-      "import": "./dist/src/concat.js"
+      "node": {
+        "import": "./dist/src/concat.node.js",
+        "require": "./dist/cjs/src/concat.node.js"
+      },
+      "import": "./dist/src/concat.js",
+      "require": "./dist/cjs/src/concat.js"
     },
     "./equals": {
       "types": "./dist/src/equals.d.ts",
-      "import": "./dist/src/equals.js"
+      "import": "./dist/src/equals.js",
+      "require": "./dist/cjs/src/equals.js"
     },
     "./from-string": {
       "types": "./dist/src/from-string.d.ts",
-      "node": "./dist/src/from-string.node.js",
-      "import": "./dist/src/from-string.js"
+      "node": {
+        "import": "./dist/src/from-string.node.js",
+        "require": "./dist/cjs/src/from-string.node.js"
+      },
+      "import": "./dist/src/from-string.js",
+      "require": "./dist/cjs/src/from-string.js"
     },
     "./to-string": {
       "types": "./dist/src/to-string.d.ts",
-      "node": "./dist/src/to-string.node.js",
-      "import": "./dist/src/to-string.js"
+      "node": {
+        "import": "./dist/src/to-string.node.js",
+        "require": "./dist/cjs/src/to-string.node.js"
+      },
+      "import": "./dist/src/to-string.js",
+      "require": "./dist/cjs/src/to-string.js"
     },
     "./xor": {
       "types": "./dist/src/xor.d.ts",
-      "import": "./dist/src/xor.js"
+      "import": "./dist/src/xor.js",
+      "require": "./dist/cjs/src/xor.js"
     },
     "./xor-compare": {
       "types": "./dist/src/xor-compare.d.ts",
-      "import": "./dist/src/xor-compare.js"
+      "import": "./dist/src/xor-compare.js",
+      "require": "./dist/cjs/src/xor-compare.js"
     }
   },
   "imports": {
     "#util/as-uint8array": {
       "types": "./dist/src/util/as-uint8array.d.ts",
-      "node": "./dist/src/util/as-uint8array.node.js",
-      "import": "./dist/src/util/as-uint8array.js"
+      "node": {
+        "import": "./dist/src/util/as-uint8array.node.js",
+        "require": "./dist/cjs/src/util/as-uint8array.node.js"
+      },
+      "import": "./dist/src/util/as-uint8array.js",
+      "require": "./dist/cjs/src/util/as-uint8array.js"
     },
     "#alloc": {
       "types": "./dist/src/alloc.d.ts",
-      "node": "./dist/src/alloc.node.js",
-      "import": "./dist/src/alloc.js"
+      "node": {
+        "import": "./dist/src/alloc.node.js",
+        "require": "./dist/cjs/src/alloc.node.js"
+      },
+      "import": "./dist/src/alloc.js",
+      "require": "./dist/cjs/src/alloc.js"
     },
     "#compare": {
       "types": "./dist/src/compare.d.ts",
-      "node": "./dist/src/compare.node.js",
-      "import": "./dist/src/compare.js"
+      "node": {
+        "import": "./dist/src/compare.node.js",
+        "require": "./dist/cjs/src/compare.node.js"
+      },
+      "import": "./dist/src/compare.js",
+      "require": "./dist/cjs/src/compare.js"
     },
     "#concat": {
       "types": "./dist/src/concat.d.ts",
-      "node": "./dist/src/concat.node.js",
-      "import": "./dist/src/concat.js"
+      "node": {
+        "import": "./dist/src/concat.node.js",
+        "require": "./dist/cjs/src/concat.node.js"
+      },
+      "import": "./dist/src/concat.js",
+      "require": "./dist/cjs/src/concat.js"
     },
     "#from-string": {
       "types": "./dist/src/from-string.d.ts",
-      "node": "./dist/src/from-string.node.js",
-      "import": "./dist/src/from-string.js"
+      "node": {
+        "import": "./dist/src/from-string.node.js",
+        "require": "./dist/cjs/src/from-string.node.js"
+      },
+      "import": "./dist/src/from-string.js",
+      "require": "./dist/cjs/src/from-string.js"
     },
     "#to-string": {
       "types": "./dist/src/to-string.d.ts",
-      "node": "./dist/src/to-string.node.js",
-      "import": "./dist/src/to-string.js"
+      "node": {
+        "import": "./dist/src/to-string.node.js",
+        "require": "./dist/cjs/src/to-string.node.js"
+      },
+      "import": "./dist/src/to-string.js",
+      "require": "./dist/cjs/src/to-string.js"
     }
   },
   "eslintConfig": {
@@ -217,7 +265,8 @@
     "test:firefox-webworker": "aegir test -t webworker -- --browser firefox",
     "lint": "aegir lint",
     "release": "aegir release",
-    "build": "aegir build",
+    "build": "aegir build && npm run build:cjs",
+    "build:cjs": "tsc --project tsconfig.cjs.json --verbatimModuleSyntax false && resolve-tspaths -p tsconfig.cjs.json -s src -o dist/cjs/src && echo >./dist/cjs/package.json '{\"type\":\"commonjs\"}'",
     "dep-check": "aegir dep-check",
     "docs": "aegir docs"
   },
@@ -227,7 +276,9 @@
   "devDependencies": {
     "@types/benchmark": "^2.1.1",
     "aegir": "^42.2.3",
-    "benchmark": "^2.1.4"
+    "benchmark": "^2.1.4",
+    "typescript": "^5.6.3",
+    "resolve-tspaths": "^0.8.22"
   },
   "react-native": {
     "#util/as-uint8array": "./dist/src/util/as-uint8array.js",
diff --git a/tsconfig.cjs.json b/tsconfig.cjs.json
new file mode 100644
index 0000000..d3178ef
--- /dev/null
+++ b/tsconfig.cjs.json
@@ -0,0 +1,16 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "module": "CommonJS",
+    "outDir": "./dist/cjs",
+    "baseUrl": ".",
+    "paths": {
+      "#util/as-uint8array": ["./src/util/as-uint8array.ts"],
+      "#alloc": ["./src/alloc.ts"],
+      "#compare": ["./src/compare.ts"],
+      "#concat": ["./src/concat.ts"],
+      "#from-string": ["./src/from-string.ts"],
+      "#to-string": ["./src/to-string.ts"]
+    }
+  }
+}