diff --git a/kobalt/src/Build.kt b/kobalt/src/Build.kt
index 88bc1d0f..823750e5 100644
--- a/kobalt/src/Build.kt
+++ b/kobalt/src/Build.kt
@@ -129,7 +129,7 @@ val kobaltApp = project(kobaltPluginApi, wrapper) {
     }
 
     dependenciesTest {
-        compile("org.testng:testng:6.9.10")
+        compile("org.testng:testng:6.9.9")
     }
 
     assemble {