diff --git a/presets/leap-testnet.json b/presets/leap-testnet.json
index 925517a9..8be064f4 100644
--- a/presets/leap-testnet.json
+++ b/presets/leap-testnet.json
@@ -43,5 +43,9 @@
     "23d57231b620575c03f0e136fc37b5ec5812bb35@val.testnet.leapdao.org:46691",
     "deb472911a7a0ff3867b39c6ffa375ddbb42db5d@sen2.testnet.leapdao.org:46691",
     "5d27949fb42efc829bdc663f914fe0c069a96f2d@54.72.111.55:46691"
-  ]
-}
\ No newline at end of file
+  ],
+  "flagHeights": {
+    "spend_cond_stricter_rules": 100000,
+    "spend_cond_new_bytecode": 41000
+  }
+}