diff --git a/buildSrc/src/main/groovy/MuzzlePlugin.groovy b/buildSrc/src/main/groovy/MuzzlePlugin.groovy
index 4a82d0592a..5c0f9ef486 100644
--- a/buildSrc/src/main/groovy/MuzzlePlugin.groovy
+++ b/buildSrc/src/main/groovy/MuzzlePlugin.groovy
@@ -366,6 +366,7 @@ class MuzzlePlugin implements Plugin<Project> {
     }
 
     def muzzleTask = instrumentationProject.task(taskName) {
+      dependsOn(instrumentationProject.configurations.named("runtimeClasspath"))
       doLast {
         ClassLoader instrumentationCL = createInstrumentationClassloader(instrumentationProject, toolingProject)
         def ccl = Thread.currentThread().contextClassLoader