diff --git a/package-lock.json b/package-lock.json
index b7798c9c..01a2d668 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,6 @@
         "@actions/core": "^1.10.1",
         "@actions/github": "^6.0.0",
         "@slack/web-api": "^7.5.0",
-        "@types/markup-js": "^1.5.0",
         "axios": "^1.7.7",
         "axios-retry": "^4.5.0",
         "flat": "^5.0.2",
@@ -25,6 +24,7 @@
         "@types/chai": "^4.3.19",
         "@types/flat": "^5.0.5",
         "@types/js-yaml": "^4.0.9",
+        "@types/markup-js": "^1.5.0",
         "@types/mocha": "^10.0.7",
         "@types/node": "^20.14.10",
         "@types/sinon": "^17.0.3",
@@ -525,6 +525,7 @@
       "version": "1.5.0",
       "resolved": "https://registry.npmjs.org/@types/markup-js/-/markup-js-1.5.0.tgz",
       "integrity": "sha512-yUPklfeB8Sk72gp0D0A/xjAR0QTKwVAY6hr1ORj44uSnqXIp7aEkWFZrAMf7md0PgVIMEAZtiEaNVFGaSyVA+A==",
+      "dev": true,
       "license": "MIT"
     },
     "node_modules/@types/mocha": {
diff --git a/package.json b/package.json
index d7cdecdb..25ae5edb 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,6 @@
     "@actions/core": "^1.10.1",
     "@actions/github": "^6.0.0",
     "@slack/web-api": "^7.5.0",
-    "@types/markup-js": "^1.5.0",
     "axios": "^1.7.7",
     "axios-retry": "^4.5.0",
     "flat": "^5.0.2",
@@ -49,6 +48,7 @@
     "@types/chai": "^4.3.19",
     "@types/flat": "^5.0.5",
     "@types/js-yaml": "^4.0.9",
+    "@types/markup-js": "^1.5.0",
     "@types/mocha": "^10.0.7",
     "@types/node": "^20.14.10",
     "@types/sinon": "^17.0.3",