diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 0c560bc..bb93437 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,6 +8,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+      
+      - run: rustup toolchain install nightly
 
       - name: Build Test.class
         run: javac testdata/Test.java