diff --git a/native/explorer/Cross.toml b/native/explorer/Cross.toml
deleted file mode 100644
index 2c0e4bb4a..000000000
--- a/native/explorer/Cross.toml
+++ /dev/null
@@ -1,5 +0,0 @@
-[build.env]
-passthrough = [
-  "RUSTLER_NIF_VERSION",
-  "RUSTFLAGS"
-]
diff --git a/native/explorer/rust-toolchain.toml b/native/explorer/rust-toolchain.toml
index 09db14359..48871b055 100644
--- a/native/explorer/rust-toolchain.toml
+++ b/native/explorer/rust-toolchain.toml
@@ -1,4 +1,4 @@
 [toolchain]
-channel = "nightly-2025-06-23"
+channel = "nightly-2026-01-09"
 components = ["rustfmt", "clippy"]
 profile = "minimal"