diff --git a/package-lock.json b/package-lock.json
index 4fbbd74..e27a2d1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,8 @@
             "version": "1.5.0",
             "license": "GPL-3.0-or-later",
             "dependencies": {
-                "@types/jquery": "^3.5.5"
+                "@types/jquery": "^3.5.5",
+                "@types/oojs-ui": "^0.46.0"
             },
             "devDependencies": {
                 "dtslint": "^4.0.6",
@@ -113,6 +114,20 @@
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             "dev": true
         },
+        "node_modules/@types/oojs": {
+            "version": "7.0.6",
+            "resolved": "https://registry.npmjs.org/@types/oojs/-/oojs-7.0.6.tgz",
+            "integrity": "sha512-e6UBEoqJ3bLBvxtPnaFmqkK4HzPwrS3sqfB2dORUmAaShp/T7WhMoYjlwhe+7g748qv7eeX/q4WdOaeeVG2LtA=="
+        },
+        "node_modules/@types/oojs-ui": {
+            "version": "0.46.4",
+            "resolved": "https://registry.npmjs.org/@types/oojs-ui/-/oojs-ui-0.46.4.tgz",
+            "integrity": "sha512-tpQyPjxr6FhMRNaactbjNXkr4uCsKNQMOVNJiAO5AvzxoPddChNZp4gG37Pm80jAeDP11k9ww4durnEjzqqKsQ==",
+            "dependencies": {
+                "@types/jquery": "*",
+                "@types/oojs": "*"
+            }
+        },
         "node_modules/@types/parse-json": {
             "version": "4.0.0",
             "resolved": "https://registry.npmjs.org/@types/parse-json/-/parse-json-4.0.0.tgz",
@@ -3444,6 +3459,20 @@
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             "dev": true
         },
+        "@types/oojs": {
+            "version": "7.0.6",
+            "resolved": "https://registry.npmjs.org/@types/oojs/-/oojs-7.0.6.tgz",
+            "integrity": "sha512-e6UBEoqJ3bLBvxtPnaFmqkK4HzPwrS3sqfB2dORUmAaShp/T7WhMoYjlwhe+7g748qv7eeX/q4WdOaeeVG2LtA=="
+        },
+        "@types/oojs-ui": {
+            "version": "0.46.4",
+            "resolved": "https://registry.npmjs.org/@types/oojs-ui/-/oojs-ui-0.46.4.tgz",
+            "integrity": "sha512-tpQyPjxr6FhMRNaactbjNXkr4uCsKNQMOVNJiAO5AvzxoPddChNZp4gG37Pm80jAeDP11k9ww4durnEjzqqKsQ==",
+            "requires": {
+                "@types/jquery": "*",
+                "@types/oojs": "*"
+            }
+        },
         "@types/parse-json": {
             "version": "4.0.0",
             "resolved": "https://registry.npmjs.org/@types/parse-json/-/parse-json-4.0.0.tgz",
diff --git a/package.json b/package.json
index 709779a..fc5628f 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,8 @@
     },
     "homepage": "https://github.com/wikimedia-gadgets/types-mediawiki#readme",
     "dependencies": {
-        "@types/jquery": "^3.5.5"
+        "@types/jquery": "^3.5.5",
+        "@types/oojs-ui": "^0.46.0"
     },
     "devDependencies": {
         "dtslint": "^4.0.6",