diff --git a/crates/ethereum-forks/src/hardfork.rs b/crates/ethereum-forks/src/hardfork.rs
index 4c9b6a10e30b..1f8346bfe4ec 100644
--- a/crates/ethereum-forks/src/hardfork.rs
+++ b/crates/ethereum-forks/src/hardfork.rs
@@ -251,6 +251,7 @@ impl Hardfork {
             Self::Regolith => Some(0),
             Self::Shanghai | Self::Canyon => Some(2106456),
             Self::Cancun | Self::Ecotone => Some(6383256),
+            Self::Fjord => Some(10615056),
             _ => None,
         }
     }
@@ -485,6 +486,7 @@ impl Hardfork {
             Self::Regolith => Some(1695768288),
             Self::Shanghai | Self::Canyon => Some(1699981200),
             Self::Cancun | Self::Ecotone => Some(1708534800),
+            Self::Fjord => Some(1716998400),
             _ => None,
         }
     }
@@ -513,6 +515,7 @@ impl Hardfork {
             Self::Regolith => Some(1686789347),
             Self::Shanghai | Self::Canyon => Some(1704992401),
             Self::Cancun | Self::Ecotone => Some(1710374401),
+            Self::Fjord => Some(1720627201),
             _ => None,
         }
     }
@@ -548,6 +551,8 @@ impl FromStr for Hardfork {
             "canyon" => Self::Canyon,
             #[cfg(feature = "optimism")]
             "ecotone" => Self::Ecotone,
+            #[cfg(feature = "optimism")]
+            "fjord" => Self::Fjord,
             "prague" => Self::Prague,
             // "arbos11" => Hardfork::ArbOS11,
             // "arbos20atlas" => Hardfork::ArbOS20Atlas,
@@ -618,9 +623,14 @@ mod tests {
     #[test]
     #[cfg(feature = "optimism")]
     fn check_op_hardfork_from_str() {
-        let hardfork_str = ["beDrOck", "rEgOlITH", "cAnYoN", "eCoToNe"];
-        let expected_hardforks =
-            [Hardfork::Bedrock, Hardfork::Regolith, Hardfork::Canyon, Hardfork::Ecotone];
+        let hardfork_str = ["beDrOck", "rEgOlITH", "cAnYoN", "eCoToNe", "FJorD"];
+        let expected_hardforks = [
+            Hardfork::Bedrock,
+            Hardfork::Regolith,
+            Hardfork::Canyon,
+            Hardfork::Ecotone,
+            Hardfork::Fjord,
+        ];
 
         let hardforks: Vec<Hardfork> =
             hardfork_str.iter().map(|h| Hardfork::from_str(h).unwrap()).collect();
@@ -655,8 +665,13 @@ mod tests {
         let pos_hardforks = [Hardfork::Paris, Hardfork::Shanghai, Hardfork::Cancun];
 
         #[cfg(feature = "optimism")]
-        let op_hardforks =
-            [Hardfork::Bedrock, Hardfork::Regolith, Hardfork::Canyon, Hardfork::Ecotone];
+        let op_hardforks = [
+            Hardfork::Bedrock,
+            Hardfork::Regolith,
+            Hardfork::Canyon,
+            Hardfork::Ecotone,
+            Hardfork::Fjord,
+        ];
 
         for hardfork in &pow_hardforks {
             assert_eq!(hardfork.consensus_type(), ConsensusType::ProofOfWork);