diff --git a/core/allocs/dev.json b/core/allocs/dev.json
new file mode 100644
index 000000000..afdf4f9fe
--- /dev/null
+++ b/core/allocs/dev.json
@@ -0,0 +1,35 @@
+{
+  "0x0000000000000000000000000000000000000001": {
+    "balance": "0x1"
+  },
+  "0x0000000000000000000000000000000000000002": {
+    "balance": "0x1"
+  },
+  "0x0000000000000000000000000000000000000003": {
+    "balance": "0x1"
+  },
+  "0x0000000000000000000000000000000000000004": {
+    "balance": "0x1"
+  },
+  "0x0000000000000000000000000000000000000005": {
+    "balance": "0x1"
+  },
+  "0x0000000000000000000000000000000000000006": {
+    "balance": "0x1"
+  },
+  "0x0000000000000000000000000000000000000007": {
+    "balance": "0x1"
+  },
+  "0x0000000000000000000000000000000000000008": {
+    "balance": "0x1"
+  },
+  "0x0000000000000000000000000000000000000009": {
+    "balance": "0x1"
+  },
+  "0x67b1d87101671b127f5f8714789C7192f7ad340e": {
+    "balance": "0x21e19e0c9bab2400000"
+  },
+  "0xa94f5374Fce5edBC8E2a8697C15331677e6EbF0B": {
+    "balance": "0x21e19e0c9bab2400000"
+  }
+}
\ No newline at end of file
diff --git a/core/genesis.go b/core/genesis.go
index 7e88bb91c..65c544947 100644
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -718,18 +718,7 @@ func DeveloperGenesisBlock(period uint64, faucet common.Address) *Genesis {
 		ExtraData:  append(append(make([]byte, 32), faucet[:]...), make([]byte, crypto.SignatureLength)...),
 		GasLimit:   11500000,
 		Difficulty: big.NewInt(1),
-		Alloc: map[common.Address]GenesisAccount{
-			common.BytesToAddress([]byte{1}): {Balance: big.NewInt(1)}, // ECRecover
-			common.BytesToAddress([]byte{2}): {Balance: big.NewInt(1)}, // SHA256
-			common.BytesToAddress([]byte{3}): {Balance: big.NewInt(1)}, // RIPEMD
-			common.BytesToAddress([]byte{4}): {Balance: big.NewInt(1)}, // Identity
-			common.BytesToAddress([]byte{5}): {Balance: big.NewInt(1)}, // ModExp
-			common.BytesToAddress([]byte{6}): {Balance: big.NewInt(1)}, // ECAdd
-			common.BytesToAddress([]byte{7}): {Balance: big.NewInt(1)}, // ECScalarMul
-			common.BytesToAddress([]byte{8}): {Balance: big.NewInt(1)}, // ECPairing
-			common.BytesToAddress([]byte{9}): {Balance: big.NewInt(1)}, // BLAKE2b
-			faucet:                           {Balance: new(big.Int).Sub(new(big.Int).Lsh(big.NewInt(1), 256), big.NewInt(9))},
-		},
+		Alloc:      readPrealloc("allocs/dev.json"),
 	}
 }