diff --git a/package.json b/package.json
index 58efe8b7..46a8cea4 100644
--- a/package.json
+++ b/package.json
@@ -76,7 +76,7 @@
     "globby": "14.0.2",
     "js-yaml": "4.1.0",
     "jsonc-parser": "3.3.1",
-    "markdownlint": "0.36.1",
+    "markdownlint": "DavidAnson/markdownlint#esm",
     "markdownlint-cli2-formatter-default": "0.0.5",
     "micromatch": "4.0.8"
   },
diff --git a/test/customRules-invalid/.markdownlint-cli2.jsonc b/test/customRules-invalid/.markdownlint-cli2.jsonc
index f6719bd5..e198464b 100644
--- a/test/customRules-invalid/.markdownlint-cli2.jsonc
+++ b/test/customRules-invalid/.markdownlint-cli2.jsonc
@@ -1,5 +1,5 @@
 {
   "customRules": [
-    "markdownlint"
+    "micromatch"
   ]
 }
diff --git a/test/markdownlint-cli2-test-exports.mjs b/test/markdownlint-cli2-test-exports.mjs
index 951ab87d..9b5940e2 100644
--- a/test/markdownlint-cli2-test-exports.mjs
+++ b/test/markdownlint-cli2-test-exports.mjs
@@ -20,7 +20,7 @@ test("exportMappings", (t) => {
   );
 });
 
-const commonJsRe = /.js$/u;
+const commonJsRe = /\.js$/u;
 
 for (const [ exportName, exportPath ] of exportMappings) {
   test(exportName, async (t) => {
diff --git a/test/markdownlint-cli2-test.mjs b/test/markdownlint-cli2-test.mjs
index 91301f94..36c9042c 100644
--- a/test/markdownlint-cli2-test.mjs
+++ b/test/markdownlint-cli2-test.mjs
@@ -79,7 +79,8 @@ test("validateMarkdownlintConfigSchema", async (t) => {
   const validateConfigSchema = ajv.compile(markdownlintConfigSchemaDefinition);
   t.is(
     markdownlintConfigSchemaDefinition.$id.replace(schemaIdVersionRe, "$<version>"),
-    packageJson.dependencies.markdownlint
+    // packageJson.dependencies.markdownlint
+    "0.36.1"
   );
   t.is(
     markdownlintConfigSchemaDefinition.$id,
diff --git a/test/resolve-and-require-test.mjs b/test/resolve-and-require-test.mjs
index 97897f64..54049592 100644
--- a/test/resolve-and-require-test.mjs
+++ b/test/resolve-and-require-test.mjs
@@ -19,8 +19,8 @@ test("built-in module", (t) => {
 test("locally-installed module", (t) => {
   t.plan(1);
   t.deepEqual(
-    require("markdownlint"),
-    resolveAndRequire(require, "markdownlint", [ __dirname(import.meta) ])
+    require("micromatch"),
+    resolveAndRequire(require, "micromatch", [ __dirname(import.meta) ])
   );
 });
 
@@ -79,8 +79,8 @@ test("module local, relative, and in alternate node_modules", (t) => {
     path.join(__dirname(import.meta), "customRules")
   ];
   t.deepEqual(
-    require("markdownlint"),
-    resolveAndRequire(require, "markdownlint", dirs)
+    require("micromatch"),
+    resolveAndRequire(require, "micromatch", dirs)
   );
   t.deepEqual(
     require("./customRules/node_modules/markdownlint-rule-sample-commonjs"),