diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 0bbc2b36..99977405 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -29,6 +29,10 @@ jobs:
             os: macos-13
           - toolchain: stable
             os: macos-latest
+          - toolchain: "1.1"
+            os: ubuntu-latest
+          - toolchain: "1.10"
+            os: ubuntu-latest
           - toolchain: "1.20"
             os: ubuntu-latest
           - toolchain: "1.28"