diff --git a/lib/constants.js b/lib/constants.js
index e081b4f..e9933bb 100644
--- a/lib/constants.js
+++ b/lib/constants.js
@@ -1,3 +1,3 @@
-export const SPARK_VERSION = '1.8.0'
+export const SPARK_VERSION = '1.9.0'
 export const MAX_CAR_SIZE = 200 * 1024 * 1024 // 200 MB
 export const APPROX_ROUND_LENGTH_IN_MS = 20 * 60_000 // 20 minutes