diff --git a/.changeset/refresh-derived-invalidation.md b/.changeset/refresh-derived-invalidation.md
new file mode 100644
index 0000000..e45c506
--- /dev/null
+++ b/.changeset/refresh-derived-invalidation.md
@@ -0,0 +1,5 @@
+---
+"@effect-atom/atom": patch
+---
+
+ensure refreshed lazy parents invalidate newly mounted children
diff --git a/packages/atom/src/internal/registry.ts b/packages/atom/src/internal/registry.ts
index 5dd8054..6474574 100644
--- a/packages/atom/src/internal/registry.ts
+++ b/packages/atom/src/internal/registry.ts
@@ -376,6 +376,9 @@ class Node<A> {
 
     if (parent.children.indexOf(this) === -1) {
       parent.children.push(this)
+      if (parent.skipInvalidation) {
+        parent.skipInvalidation = false
+      }
     }
   }
 
diff --git a/packages/atom/test/Atom.test.ts b/packages/atom/test/Atom.test.ts
index 38cb17e..a70a486 100644
--- a/packages/atom/test/Atom.test.ts
+++ b/packages/atom/test/Atom.test.ts
@@ -278,6 +278,33 @@ describe("Atom", () => {
     expect(rebuilds).toEqual(2)
   })
 
+  it("refresh derived before mount resolves base effect", async () => {
+    const baseAtom = Atom.make(
+      Effect.succeed("value").pipe(Effect.delay(100))
+    )
+    const derivedAtom = Atom.writable(
+      (get) => get(baseAtom),
+      () => {
+      },
+      (refresh) => refresh(baseAtom)
+    )
+    const registry = Registry.make()
+
+    registry.refresh(derivedAtom)
+    const unmount = registry.mount(derivedAtom)
+
+    let result = registry.get(derivedAtom)
+    assert(result.waiting)
+
+    await vitest.advanceTimersByTimeAsync(100)
+
+    result = registry.get(derivedAtom)
+    assert(Result.isSuccess(result))
+    expect(result.value).toEqual("value")
+
+    unmount()
+  })
+
   it("scopedFn", async () => {
     let finalized = 0
     const count = Atom.fn((n: number) =>