diff --git a/build.gradle b/build.gradle
index 320ffb5b84..9585d9a368 100644
--- a/build.gradle
+++ b/build.gradle
@@ -98,7 +98,7 @@ buildscript {
     ext.commons_cli_version = '1.4'
     ext.protonj_version = '0.33.0' // Overide Artemis version
     ext.snappy_version = '0.4'
-    ext.class_graph_version = '4.6.12'
+    ext.class_graph_version = '4.8.38'
     ext.jcabi_manifests_version = '1.1'
     ext.picocli_version = '3.8.0'
     ext.commons_io_version = '2.6'
diff --git a/testing/node-driver/src/main/kotlin/net/corda/testing/node/internal/TestCordappImpl.kt b/testing/node-driver/src/main/kotlin/net/corda/testing/node/internal/TestCordappImpl.kt
index 8c924cd047..6129a0f127 100644
--- a/testing/node-driver/src/main/kotlin/net/corda/testing/node/internal/TestCordappImpl.kt
+++ b/testing/node-driver/src/main/kotlin/net/corda/testing/node/internal/TestCordappImpl.kt
@@ -54,15 +54,15 @@ data class TestCordappImpl(val scanPackage: String, override val config: Map<Str
 
         private fun findRootPaths(scanPackage: String): Set<Path> {
             return packageToRootPaths.computeIfAbsent(scanPackage) {
-                ClassGraph()
-                        .whitelistPackages(scanPackage)
-                        .pooledScan()
-                        .use { it.allResources }
-                        .asSequence()
-                        .map { it.classpathElementFile.toPath() }
-                        .filterNot { it.toString().endsWith("-tests.jar") }
-                        .map { if (it.toString().endsWith(".jar")) it else findProjectRoot(it) }
-                        .toSet()
+                val classGraph = ClassGraph().whitelistPackages(scanPackage)
+                classGraph.pooledScan().use {
+                    it.allResources
+                            .asSequence()
+                            .map { it.classpathElementFile.toPath() }
+                            .filterNot { it.toString().endsWith("-tests.jar") }
+                            .map { if (it.toString().endsWith(".jar")) it else findProjectRoot(it) }
+                            .toSet()
+                }
             }
         }