diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 2f10dc6..7e94d81 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -30,8 +30,8 @@ jobs:
       run: cargo test --verbose --no-fail-fast
       env:
         CARGO_INCREMENTAL: '0'
-        RUSTFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests'
-        RUSTDOCFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests'
+        RUSTFLAGS: '-Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests -Cinstrument-coverage'
+        RUSTDOCFLAGS: '-Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests -Cinstrument-coverage'
     - name: rust-grcov
       # You may pin to the exact commit or the version.
       # uses: actions-rs/grcov@bb47b1ed7883a1502fa6875d562727ace2511248
diff --git a/Cargo.toml b/Cargo.toml
index 8222d5c..6920403 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ska"
-version = "0.3.11"
+version = "0.3.12"
 authors = [
     "John Lees <jlees@ebi.ac.uk>",
     "Simon Harris <simon.harris@gatesfoundation.org>",