diff --git a/package.json b/package.json
index 7f933ea7..10f38ab7 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "js-yaml": "~3.13.1",
     "make-dir-cli": "~2.0.0",
     "markdown-it-for-inline": "~0.1.1",
-    "markdown-it-katex": "~2.0.3",
+    "@iktakahiro/markdown-it-katex": "~4.0.0",
     "markdown-it-sub": "~1.0.0",
     "markdown-it-sup": "~1.0.0",
     "markdownlint-rule-helpers": "~0.7.0",
diff --git a/test/markdownlint-test.js b/test/markdownlint-test.js
index 04c8ab67..8707e258 100644
--- a/test/markdownlint-test.js
+++ b/test/markdownlint-test.js
@@ -9,7 +9,7 @@ const { URL } = require("url");
 const { promisify } = require("util");
 const md = require("markdown-it")();
 const pluginInline = require("markdown-it-for-inline");
-const pluginKatex = require("markdown-it-katex");
+const pluginKatex = require("@iktakahiro/markdown-it-katex");
 const pluginSub = require("markdown-it-sub");
 const pluginSup = require("markdown-it-sup");
 const tape = require("tape");