diff --git a/.gitmodules b/.gitmodules
index 5478a8f64a..4c3e8da3d8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -231,3 +231,6 @@
 	path = vendor/nim-minilru
 	url = https://github.com/status-im/nim-minilru.git
 	branch = master
+[submodule "vendor/constantine"]
+	path = vendor/constantine
+	url = https://github.com/mratsim/constantine
diff --git a/execution_chain/evm/precompiles.nim b/execution_chain/evm/precompiles.nim
index 6c7f1df90d..56f2b48bd6 100644
--- a/execution_chain/evm/precompiles.nim
+++ b/execution_chain/evm/precompiles.nim
@@ -11,6 +11,7 @@
 import
   std/[macros],
   results,
+  constantine/ethereum_evm_precompiles,
   "."/[types, blake2b_f, blscurve],
   ./interpreter/[gas_meter, gas_costs, utils/utils_numeric],
   eth/common/keys,
@@ -134,8 +135,8 @@ func getPoint[T: G1|G2](_: typedesc[T], data: openArray[byte]): EvmResult[Point[
       return err(prcErr(PrcInvalidPoint))
     ok(ap.toJacobian())
 
-func getFR(data: openArray[byte]): EvmResult[FR] =
-  var res: FR
+func getFR(data: openArray[byte]): EvmResult[fp.FR] =
+  var res: fp.FR
   if not res.fromBytes2(data):
     return err(prcErr(PrcInvalidPoint))
   ok(res)
@@ -312,19 +313,16 @@ func bn256ecAdd(c: Computation, fork: EVMFork = FkByzantium): EvmResultVoid =
   let gasFee = if fork < FkIstanbul: GasECAdd else: GasECAddIstanbul
   ? c.gasMeter.consumeGas(gasFee, reason = "ecAdd Precompile")
 
-  var
-    input: array[128, byte]
   # Padding data
   let len = min(c.msg.data.len, 128) - 1
-  input[0..len] = c.msg.data[0..len]
-  var p1 = ? G1.getPoint(input.toOpenArray(0, 63))
-  var p2 = ? G1.getPoint(input.toOpenArray(64, 127))
-  var apo = (p1 + p2).toAffine()
-
   c.output.setLen(64)
-  if isSome(apo):
-    # we can discard here because we supply proper buffer
-    discard apo.get().toBytes(c.output)
+
+  let status = eth_evm_bn254_g1add(c.output,  c.msg.data.toOpenArray(0, len))
+
+  if status == CttEVMStatus.cttEVM_PointNotOnCurve:
+    return err(EvmErrorObj(code: PrcInvalidPoint))
+  elif status != CttEVMStatus.cttEVM_Success:
+    return err(EvmErrorObj(code: PrcInvalidParam))
 
   ok()
 
@@ -337,15 +335,14 @@ func bn256ecMul(c: Computation, fork: EVMFork = FkByzantium): EvmResultVoid =
 
   # Padding data
   let len = min(c.msg.data.len, 96) - 1
-  assign(input.toOpenArray(0, len), c.msg.data.toOpenArray(0, len))
-  var p1 = ? G1.getPoint(input.toOpenArray(0, 63))
-  var fr = ? getFR(input.toOpenArray(64, 95))
-  var apo = (p1 * fr).toAffine()
-
   c.output.setLen(64)
-  if isSome(apo):
-    # we can discard here because we supply buffer of proper size
-    discard apo.get().toBytes(c.output)
+  
+  let status = eth_evm_bn254_g1mul(c.output, c.msg.data.toOpenArray(0, len))
+
+  if status == CttEVMStatus.cttEVM_PointNotOnCurve:
+    return err(EvmErrorObj(code: PrcInvalidPoint))
+  elif status != CttEVMStatus.cttEVM_Success:
+    return err(EvmErrorObj(code: PrcInvalidParam))
 
   ok()
 
diff --git a/nimbus.nimble b/nimbus.nimble
index 8306149a9b..1d9fdfe68a 100644
--- a/nimbus.nimble
+++ b/nimbus.nimble
@@ -19,6 +19,7 @@ skipDirs      = @["tests", "examples"]
 requires "nim >= 1.6.0",
   "bncurve",
   "chronicles",
+  "constantine",
   "chronos",
   "eth",
   "json_rpc",
diff --git a/vendor/constantine b/vendor/constantine
new file mode 160000
index 0000000000..782d838e7a
--- /dev/null
+++ b/vendor/constantine
@@ -0,0 +1 @@
+Subproject commit 782d838e7a073262750eff593af6dfff3ff832dd