diff --git a/Cargo.toml b/Cargo.toml
index c1b1590..32771a5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,6 +17,9 @@ keywords = ["dag", "async", "task", "parallel", "executor"]
 categories = ["asynchronous", "concurrency", "data-structures"]
 exclude = [".claude/", ".jj/", "dagx-spec.md"]
 
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tarpaulin)'] }
+
 [dependencies]
 futures = "0.3"
 parking_lot = "0.12"
diff --git a/tests/arc_tests.rs b/tests/arc_tests.rs
index c60b673..4fda700 100644
--- a/tests/arc_tests.rs
+++ b/tests/arc_tests.rs
@@ -1092,6 +1092,7 @@ async fn test_arc_mixed_with_non_arc() {
 
 /// Test 16: Arc in parallel execution paths
 #[tokio::test]
+#[cfg_attr(tarpaulin, ignore)] // Timing tests are unreliable with instrumentation overhead
 async fn test_arc_parallel_execution() {
     struct SharedProducer;
 
diff --git a/tests/boundaries/deep_chains.rs b/tests/boundaries/deep_chains.rs
index ddf5125..7fc790c 100644
--- a/tests/boundaries/deep_chains.rs
+++ b/tests/boundaries/deep_chains.rs
@@ -304,7 +304,7 @@ async fn test_zigzag_dependencies() -> DagResult<()> {
 }
 
 #[tokio::test]
-#[ignore] // This test is extremely resource intensive
+#[cfg_attr(tarpaulin, ignore)] // This test is extremely resource intensive
 async fn test_10000_level_chain_stress() -> DagResult<()> {
     // Ultimate deep chain test
     let dag = DagRunner::new();
diff --git a/tests/boundaries/large_scale.rs b/tests/boundaries/large_scale.rs
index 20351c9..e3b5768 100644
--- a/tests/boundaries/large_scale.rs
+++ b/tests/boundaries/large_scale.rs
@@ -213,7 +213,7 @@ async fn test_10000_node_linear_chain_segments() -> DagResult<()> {
 }
 
 #[tokio::test]
-#[ignore] // This test is very resource intensive
+#[cfg_attr(tarpaulin, ignore)] // This test is very resource intensive
 async fn test_100000_nodes_stress() -> DagResult<()> {
     // Ultimate stress test: 100,000 nodes
     let dag = DagRunner::new();