diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bb9dcf9b..cd302699 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -135,14 +135,14 @@ jobs:
           - x86_64-unknown-linux-gnu
 
         mode:
-          - # debug
+          $ - # debug
           - --release
 
         rust_channel:
           - stable
           # Keep in sync with Cargo.toml and similar `rust_channel` sections.
           - 1.61.0 # MSRV
-          - nightly
+          # - nightly
           - beta
 
         include: