diff --git a/.cirrus.yml b/.cirrus.yml
index 96ee41e9..cd1631c0 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -21,6 +21,6 @@ task:
     - rustup component add llvm-tools-preview
   test_script:
     - . $HOME/.cargo/env
-    - env LLVM_PROFILE_FILE="calloop-%p-%m.profraw" RUSTFLAGS="-Zinstrument-coverage" cargo test --all-features
+    - env LLVM_PROFILE_FILE="calloop-%p-%m.profraw" RUSTFLAGS="-Cinstrument-coverage --cfg coverage" cargo test --all-features
     - grcov . --binary-path ./target/debug -s . -t lcov --branch --llvm --ignore-not-existing --keep-only "src/*" --excl-br-start "mod tests \{" --excl-start "mod tests \{" --excl-br-line "#\[derive\(" --excl-line "#\[derive\(" -o lcov.info
     - bash -c 'bash <(curl -s https://codecov.io/bash) -f lcov.info' -F freebsd