diff --git a/ethcore/types/src/engines/params.rs b/ethcore/types/src/engines/params.rs
index 7176093f34b..b8edebc94f5 100644
--- a/ethcore/types/src/engines/params.rs
+++ b/ethcore/types/src/engines/params.rs
@@ -88,8 +88,12 @@ pub struct CommonParams {
 	pub eip1283_transition: BlockNumber,
 	/// Number of first block where EIP-1283 rules end.
 	pub eip1283_disable_transition: BlockNumber,
+	/// Number of first block where EIP-1283 rules re-enabled.
+	pub eip1283_reenable_transition: BlockNumber,
 	/// Number of first block where EIP-1014 rules begin.
 	pub eip1014_transition: BlockNumber,
+	/// Number of first block where EIP-1706 rules begin.
+	pub eip1706_transition: BlockNumber,
 	/// Number of first block where EIP-1344 rules begin: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1344.md
 	pub eip1344_transition: BlockNumber,
 	/// Number of first block where EIP-1884 rules begin:https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1884.md
@@ -166,7 +170,11 @@ impl CommonParams {
 		schedule.have_bitwise_shifting = block_number >= self.eip145_transition;
 		schedule.have_extcodehash = block_number >= self.eip1052_transition;
 		schedule.have_chain_id = block_number >= self.eip1344_transition;
-		schedule.eip1283 = block_number >= self.eip1283_transition && !(block_number >= self.eip1283_disable_transition);
+		schedule.eip1283 =
+			(block_number >= self.eip1283_transition &&
+			 !(block_number >= self.eip1283_disable_transition)) ||
+			block_number >= self.eip1283_reenable_transition;
+		schedule.eip1706 = block_number >= self.eip1706_transition;
 
 		if block_number >= self.eip1884_transition {
 			schedule.have_selfbalance = true;
@@ -290,6 +298,14 @@ impl From<ethjson::spec::Params> for CommonParams {
 				BlockNumber::max_value,
 				Into::into,
 			),
+			eip1283_reenable_transition: p.eip1283_reenable_transition.map_or_else(
+				BlockNumber::max_value,
+				Into::into,
+			),
+			eip1706_transition: p.eip1706_transition.map_or_else(
+				BlockNumber::max_value,
+				Into::into,
+			),
 			eip1014_transition: p.eip1014_transition.map_or_else(
 				BlockNumber::max_value,
 				Into::into,
diff --git a/ethcore/vm/src/schedule.rs b/ethcore/vm/src/schedule.rs
index 877ef145b65..f3b7afbf1d2 100644
--- a/ethcore/vm/src/schedule.rs
+++ b/ethcore/vm/src/schedule.rs
@@ -132,6 +132,8 @@ pub struct Schedule {
 	pub kill_dust: CleanDustMode,
 	/// Enable EIP-1283 rules
 	pub eip1283: bool,
+	/// Enable EIP-1706 rules
+	pub eip1706: bool,
 	/// VM execution does not increase null signed address nonce if this field is true.
 	pub keep_unsigned_nonce: bool,
 	/// Latest VM version for contract creation transaction.
@@ -273,6 +275,7 @@ impl Schedule {
 			have_static_call: false,
 			kill_dust: CleanDustMode::Off,
 			eip1283: false,
+			eip1706: false,
 			keep_unsigned_nonce: false,
 			latest_version: U256::zero(),
 			versions: HashMap::new(),
@@ -363,6 +366,7 @@ impl Schedule {
 			have_static_call: false,
 			kill_dust: CleanDustMode::Off,
 			eip1283: false,
+			eip1706: false,
 			keep_unsigned_nonce: false,
 			latest_version: U256::zero(),
 			versions: HashMap::new(),
diff --git a/json/src/spec/params.rs b/json/src/spec/params.rs
index 7b1cd1c188c..58adbd6a468 100644
--- a/json/src/spec/params.rs
+++ b/json/src/spec/params.rs
@@ -92,8 +92,12 @@ pub struct Params {
 	/// See `CommonParams` docs.
 	pub eip1283_disable_transition: Option<Uint>,
 	/// See `CommonParams` docs.
+	pub eip1283_reenable_transition: Option<Uint>,
+	/// See `CommonParams` docs.
 	pub eip1014_transition: Option<Uint>,
 	/// See `CommonParams` docs.
+	pub eip1706_transition: Option<Uint>,
+	/// See `CommonParams` docs.
 	pub eip1344_transition: Option<Uint>,
 	/// See `CommonParams` docs.
 	pub eip1884_transition: Option<Uint>,