diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b42d277f..2e9607bd 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -108,4 +108,5 @@ jobs:
       - name: Test rollup-http-server and echo-dapp client
         run: |
           cd rollup-http/rollup-http-server
+          echo -e  "[toolchain]\nchannel = \"1.77.2\"" > rust-toolchain.toml
           USE_ROLLUP_BINDINGS_MOCK=1 cargo test -- --show-output --test-threads=1