diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 15e7028..80bf561 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,8 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        # TODO: add stable and MSRV to this list once 1.99 is released.
-        channel: ['beta', 'nightly']
+        channel: ['1.99', 'stable', 'beta', 'nightly']
     steps:
       - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@master