diff --git a/.github/workflows/upstream.yml b/.github/workflows/upstream.yml
index 4a69174..571d546 100644
--- a/.github/workflows/upstream.yml
+++ b/.github/workflows/upstream.yml
@@ -19,7 +19,7 @@ jobs:
 
             - name: Set up Rust toolchain
               run: |
-                  rustup toolchain install stable --no-self-update --profile default
+                  rustup toolchain install nightly --no-self-update --profile default
                   rustup target add wasm32-unknown-unknown
 
             - name: Set up Rust cache