diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8c23f3076..00434b8d0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,4 +40,4 @@ jobs:
     with:
       directory: ${{ matrix.directory }}
       cargo_make_task: "ci"
-      toolchain: nightly-2024-01-29
+      toolchain: nightly-2024-03-31
diff --git a/leptos_reactive/Cargo.toml b/leptos_reactive/Cargo.toml
index 8b268506b..45169e934 100644
--- a/leptos_reactive/Cargo.toml
+++ b/leptos_reactive/Cargo.toml
@@ -72,7 +72,7 @@ hydrate = [
   "dep:web-sys",
 ]
 ssr = ["dep:tokio"]
-nightly = ["rkyv?/copy"]
+nightly = [] #["rkyv?/copy"] # not working on more recent nightlys
 serde = []
 serde-lite = ["dep:serde-lite"]
 miniserde = ["dep:miniserde"]