diff --git a/Cargo.lock b/Cargo.lock
index 301eaa89df..61fca85ef3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -369,7 +369,7 @@ dependencies = [
 [[package]]
 name = "bitcrypto"
 version = "0.1.0"
-source = "git+https://github.com/artemii235/parity-bitcoin.git#8eb61445ff6c8e321d945c348798c0f354a9d44d"
+source = "git+https://github.com/artemii235/parity-bitcoin.git#5d03650ea4ac29ca9fe392511de24859dec05821"
 dependencies = [
  "groestl",
  "primitives",
@@ -642,7 +642,7 @@ dependencies = [
 [[package]]
 name = "chain"
 version = "0.1.0"
-source = "git+https://github.com/artemii235/parity-bitcoin.git#8eb61445ff6c8e321d945c348798c0f354a9d44d"
+source = "git+https://github.com/artemii235/parity-bitcoin.git#5d03650ea4ac29ca9fe392511de24859dec05821"
 dependencies = [
  "bitcrypto",
  "primitives",
@@ -2290,7 +2290,7 @@ dependencies = [
 [[package]]
 name = "keys"
 version = "0.1.0"
-source = "git+https://github.com/artemii235/parity-bitcoin.git#8eb61445ff6c8e321d945c348798c0f354a9d44d"
+source = "git+https://github.com/artemii235/parity-bitcoin.git#5d03650ea4ac29ca9fe392511de24859dec05821"
 dependencies = [
  "base58",
  "bitcrypto",
@@ -3571,7 +3571,7 @@ dependencies = [
 [[package]]
 name = "primitives"
 version = "0.1.0"
-source = "git+https://github.com/artemii235/parity-bitcoin.git#8eb61445ff6c8e321d945c348798c0f354a9d44d"
+source = "git+https://github.com/artemii235/parity-bitcoin.git#5d03650ea4ac29ca9fe392511de24859dec05821"
 dependencies = [
  "bigint",
  "byteorder 1.3.4",
@@ -4082,7 +4082,7 @@ dependencies = [
 [[package]]
 name = "rpc"
 version = "0.1.0"
-source = "git+https://github.com/artemii235/parity-bitcoin.git#8eb61445ff6c8e321d945c348798c0f354a9d44d"
+source = "git+https://github.com/artemii235/parity-bitcoin.git#5d03650ea4ac29ca9fe392511de24859dec05821"
 dependencies = [
  "chain",
  "keys",
@@ -4278,7 +4278,7 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 [[package]]
 name = "script"
 version = "0.1.0"
-source = "git+https://github.com/artemii235/parity-bitcoin.git#8eb61445ff6c8e321d945c348798c0f354a9d44d"
+source = "git+https://github.com/artemii235/parity-bitcoin.git#5d03650ea4ac29ca9fe392511de24859dec05821"
 dependencies = [
  "bitcrypto",
  "blake2b_simd",
@@ -4483,7 +4483,7 @@ dependencies = [
 [[package]]
 name = "serialization"
 version = "0.1.0"
-source = "git+https://github.com/artemii235/parity-bitcoin.git#8eb61445ff6c8e321d945c348798c0f354a9d44d"
+source = "git+https://github.com/artemii235/parity-bitcoin.git#5d03650ea4ac29ca9fe392511de24859dec05821"
 dependencies = [
  "byteorder 1.3.4",
  "primitives",
@@ -4492,7 +4492,7 @@ dependencies = [
 [[package]]
 name = "serialization_derive"
 version = "0.1.0"
-source = "git+https://github.com/artemii235/parity-bitcoin.git#8eb61445ff6c8e321d945c348798c0f354a9d44d"
+source = "git+https://github.com/artemii235/parity-bitcoin.git#5d03650ea4ac29ca9fe392511de24859dec05821"
 dependencies = [
  "quote 0.3.15",
  "syn 0.11.11",
diff --git a/mm2src/coins/utxo/utxo_tests.rs b/mm2src/coins/utxo/utxo_tests.rs
index ee5fa03c4b..457c496e5e 100644
--- a/mm2src/coins/utxo/utxo_tests.rs
+++ b/mm2src/coins/utxo/utxo_tests.rs
@@ -2402,3 +2402,17 @@ fn doge_mtp() {
         .unwrap();
     assert_eq!(mtp, 1614849084);
 }
+
+#[test]
+fn firo_mtp() {
+    let electrum = electrum_client_for_test(&[
+        "electrumx01.firo.org:50001",
+        "electrumx02.firo.org:50001",
+        "electrumx03.firo.org:50001",
+    ]);
+    let mtp = electrum
+        .get_median_time_past(356730, NonZeroU64::new(11).unwrap())
+        .wait()
+        .unwrap();
+    assert_eq!(mtp, 1616492629);
+}