diff --git a/.github/workflows/build_and_test_reusable.yaml b/.github/workflows/build_and_test_reusable.yaml
index db45cd1caf3..4aab3438a87 100644
--- a/.github/workflows/build_and_test_reusable.yaml
+++ b/.github/workflows/build_and_test_reusable.yaml
@@ -49,6 +49,8 @@ jobs:
             QT_QPA_PLATFORM: offscreen
             RUSTFLAGS: -D warnings
             CARGO_PROFILE_DEV_DEBUG: 0
+            # Build slint-compiler in release to make test-driver-rust's build-time feature build faster.
+            CARGO_PROFILE_DEV_BUILD_OVERRIDE_OPT_LEVEL: 3
             CARGO_INCREMENTAL: false
             RUST_BACKTRACE: 1
             SLINT_EMIT_DEBUG_INFO: 1