diff --git a/simulator/build.gradle.kts b/simulator/build.gradle.kts
index 2a09c9b29..e1c831c97 100644
--- a/simulator/build.gradle.kts
+++ b/simulator/build.gradle.kts
@@ -58,3 +58,9 @@ tasks.register<Copy>("untarTestBlockStream") {
 tasks.named("processResources") { dependsOn(tasks.named("untarTestBlockStream")) }
 
 tasks.named("sourcesJar") { dependsOn(tasks.named("untarTestBlockStream")) }
+
+// Ensure untar runs before test tasks
+tasks.named("test") {
+    dependsOn(tasks.named("untarTestBlockStream"))
+    mustRunAfter(tasks.named("processResources"))
+}