diff --git a/packages/react-docgen/src/Documentation.ts b/packages/react-docgen/src/Documentation.ts
index 3bbd1b5fe49..f6e63d759c5 100644
--- a/packages/react-docgen/src/Documentation.ts
+++ b/packages/react-docgen/src/Documentation.ts
@@ -205,6 +205,7 @@ export default class DocumentationBuilder {
     const obj: Documentation = {};
 
     for (const [key, value] of this.#data) {
+      // @ts-expect-error custom handlers can add any properties to Documentation
       obj[key] = value;
     }
 
diff --git a/tsconfig.base.json b/tsconfig.base.json
index 886415fa9e2..06750eaaddc 100644
--- a/tsconfig.base.json
+++ b/tsconfig.base.json
@@ -6,7 +6,7 @@
     "target": "es2020",
     "module": "es2020",
     "strict": true,
-    "noImplicitAny": false,
+    "noImplicitAny": true,
     "noImplicitReturns": true,
     "noUncheckedIndexedAccess": true,
     "noUnusedLocals": true,