diff --git a/hardforks/hybridCasper.json b/hardforks/hybridCasper.json
index 400ba79..5390171 100644
--- a/hardforks/hybridCasper.json
+++ b/hardforks/hybridCasper.json
@@ -17,7 +17,31 @@
   "casper": {
     "casperBalance": {
       "v": "1000000000000000000000000",
-      "d": "Balance of the Casper contract"
+      "d": "Balance of the Casper contract, 1e24 wei"
+    },
+    "epochLength": {
+      "v": 50,
+      "d": "Number of blocks between epochs"
+    },
+    "withdrawalDelay": {
+      "v": 15000,
+      "d": "Number of epochs a withdrawal of deposited funds is delayed"
+    },
+    "dynastyLogoutDelay": {
+      "v": 700,
+      "d": "Number of dynasties a logout is delayed"
+    },
+    "baseInterestFactor": {
+      "v": 0.007,
+      "d": "Base interest factor for validator earnings, 7e-3"
+    },
+    "basePenaltyFactor": {
+      "v": 0.0000002,
+      "d": "Base penalty factor for validators getting offline, 2e-7"
+    },
+    "minDepositSize": {
+      "v": "1500000000000000000000",
+      "d": "Minimum size of a deposit, 1.5e21 wei"
     }
   },
   "sharding": {}