diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7e695dd..02901f4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,7 +36,7 @@ jobs:
     name: test 
     steps:
     - uses: actions/checkout@v2 
-    - uses: actions-rs/toolchain@v 
+    - uses: actions-rs/toolchain@v1
       with: 
         toolchain: stable 
         profile: minimal