diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index a59b657..fba4dd7 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -22,7 +22,7 @@ jobs:
     - name: Install toolchain
       uses: actions-rs/toolchain@v1
       with:
-        toolchain: ${{ rust }}
+        toolchain: ${{ matrix.rust }}
         default: true
         override: true
     - name: Build