diff --git a/src/vanilla/utils/atomFamily.ts b/src/vanilla/utils/atomFamily.ts
index 81b0098613..5ff4fc104d 100644
--- a/src/vanilla/utils/atomFamily.ts
+++ b/src/vanilla/utils/atomFamily.ts
@@ -47,6 +47,10 @@ export function atomFamily<Param, AtomType extends Atom<unknown>>(
     return newAtom
   }
 
+  createAtom.getParams = () => {
+    return Array.from(atoms.keys())
+  }
+
   createAtom.remove = (param: Param) => {
     if (areEqual === undefined) {
       atoms.delete(param)