diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b4cbdf2..47ed928 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,7 +27,7 @@ jobs:
           - x86_64-unknown-linux-gnu
           - x86_64-pc-windows-msvc
           - x86_64-apple-darwin
-        toolchain: [stable, nightly, "1.70"]
+        toolchain: [stable]
         include:
           - target: x86_64-unknown-linux-gnu
             os: ubuntu-latest