diff --git a/crates/exec-harness/src/runtime_env/node/node.sh b/crates/exec-harness/src/runtime_env/node/node.sh
index 1883e81dd..1ea947526 100644
--- a/crates/exec-harness/src/runtime_env/node/node.sh
+++ b/crates/exec-harness/src/runtime_env/node/node.sh
@@ -50,6 +50,7 @@ add_analysis_flags() {
         --hash-seed=1
         --random-seed=1
         --no-opt
+        --always-sparkplug
         --predictable
         --predictable-gc-schedule
         --expose-gc
diff --git a/crates/exec-harness/src/runtime_env/node/tests.rs b/crates/exec-harness/src/runtime_env/node/tests.rs
index 3657cc4ca..e0471b2f0 100644
--- a/crates/exec-harness/src/runtime_env/node/tests.rs
+++ b/crates/exec-harness/src/runtime_env/node/tests.rs
@@ -44,6 +44,7 @@ fn expected_flags(mode: &str, major: u32, v8_log: Option<&str>) -> Vec<String> {
             "--hash-seed=1",
             "--random-seed=1",
             "--no-opt",
+            "--always-sparkplug",
             "--predictable",
             "--predictable-gc-schedule",
             "--expose-gc",