diff --git a/crates/scroll/alloy/hardforks/src/hardfork.rs b/crates/scroll/alloy/hardforks/src/hardfork.rs
index dce4ac29147..719e41c889c 100644
--- a/crates/scroll/alloy/hardforks/src/hardfork.rs
+++ b/crates/scroll/alloy/hardforks/src/hardfork.rs
@@ -21,13 +21,15 @@ hardfork!(
         /// EuclidV2 <https://docs.scroll.io/en/technology/overview/scroll-upgrades/euclid-upgrade/>
         EuclidV2,
         /// Feynman <https://docs.scroll.io/en/technology/overview/scroll-upgrades/feynman-upgrade/>
-        Feynman
+        Feynman,
+        /// Galileo <https://docs.scroll.io/en/technology/overview/scroll-upgrades/galileo-upgrade/>
+        Galileo,
     }
 );
 
 impl ScrollHardfork {
     /// Scroll mainnet list of hardforks.
-    pub const fn scroll_mainnet() -> [(Self, ForkCondition); 8] {
+    pub const fn scroll_mainnet() -> [(Self, ForkCondition); 9] {
         [
             (Self::Archimedes, ForkCondition::Block(0)),
             (Self::Bernoulli, ForkCondition::Block(5220340)),
@@ -37,11 +39,12 @@ impl ScrollHardfork {
             (Self::Euclid, ForkCondition::Timestamp(1744815600)),
             (Self::EuclidV2, ForkCondition::Timestamp(1745305200)),
             (Self::Feynman, ForkCondition::Timestamp(1755576000)),
+            (Self::Galileo, ForkCondition::Timestamp(u64::MAX)),
         ]
     }
 
     /// Scroll sepolia list of hardforks.
-    pub const fn scroll_sepolia() -> [(Self, ForkCondition); 8] {
+    pub const fn scroll_sepolia() -> [(Self, ForkCondition); 9] {
         [
             (Self::Archimedes, ForkCondition::Block(0)),
             (Self::Bernoulli, ForkCondition::Block(3747132)),
@@ -51,6 +54,7 @@ impl ScrollHardfork {
             (Self::Euclid, ForkCondition::Timestamp(1741680000)),
             (Self::EuclidV2, ForkCondition::Timestamp(1741852800)),
             (Self::Feynman, ForkCondition::Timestamp(1753167600)),
+            (Self::Galileo, ForkCondition::Timestamp(u64::MAX)),
         ]
     }
 }
@@ -62,8 +66,16 @@ mod tests {
 
     #[test]
     fn check_scroll_hardfork_from_str() {
-        let hardfork_str =
-            ["BernOulLi", "CUrie", "DaRwIn", "DaRwInV2", "EUcliD", "eUClidv2", "FEYnmaN"];
+        let hardfork_str = [
+            "BernOulLi",
+            "CUrie",
+            "DaRwIn",
+            "DaRwInV2",
+            "EUcliD",
+            "eUClidv2",
+            "FEYnmaN",
+            "gaLiLEo",
+        ];
         let expected_hardforks = [
             ScrollHardfork::Bernoulli,
             ScrollHardfork::Curie,
@@ -72,6 +84,7 @@ mod tests {
             ScrollHardfork::Euclid,
             ScrollHardfork::EuclidV2,
             ScrollHardfork::Feynman,
+            ScrollHardfork::Galileo,
         ];
 
         let hardforks: Vec<ScrollHardfork> =
diff --git a/crates/scroll/alloy/hardforks/src/lib.rs b/crates/scroll/alloy/hardforks/src/lib.rs
index a4b755ac03b..7dba7693601 100644
--- a/crates/scroll/alloy/hardforks/src/lib.rs
+++ b/crates/scroll/alloy/hardforks/src/lib.rs
@@ -52,6 +52,11 @@ pub trait ScrollHardforks: EthereumHardforks {
     fn is_feynman_active_at_timestamp(&self, timestamp: u64) -> bool {
         self.scroll_fork_activation(ScrollHardfork::Feynman).active_at_timestamp(timestamp)
     }
+
+    /// Returns `true` if [`Galileo`](ScrollHardfork::Galileo) is active at given block timestamp.
+    fn is_galileo_active_at_timestamp(&self, timestamp: u64) -> bool {
+        self.scroll_fork_activation(ScrollHardfork::Galileo).active_at_timestamp(timestamp)
+    }
 }
 
 /// A type allowing to configure activation [`ForkCondition`]s for a given list of
diff --git a/crates/scroll/chainspec/src/genesis.rs b/crates/scroll/chainspec/src/genesis.rs
index c522461ec01..56a8c1ab885 100644
--- a/crates/scroll/chainspec/src/genesis.rs
+++ b/crates/scroll/chainspec/src/genesis.rs
@@ -69,6 +69,8 @@ pub struct ScrollHardforkInfo {
     pub euclid_v2_time: Option<u64>,
     /// feynman hardfork timestamp
     pub feynman_time: Option<u64>,
+    /// galileo hardfork timestamp
+    pub galileo_time: Option<u64>,
 }
 
 impl ScrollHardforkInfo {
@@ -187,7 +189,8 @@ mod tests {
           "curieBlock": 12,
           "darwinTime": 0,
           "euclidTime": 11,
-          "feynmanTime": 100
+          "feynmanTime": 100,
+          "galileoTime": 110
         }
         "#;
 
@@ -205,6 +208,7 @@ mod tests {
                 euclid_time: Some(11),
                 euclid_v2_time: None,
                 feynman_time: Some(100),
+                galileo_time: Some(110),
             }
         );
     }
@@ -219,6 +223,7 @@ mod tests {
           "darwinTime": 0,
           "euclidTime": 11,
           "feynmanTime": 100,
+          "galileoTime": 110,
           "scroll": {
             "feeVaultAddress": "0x5300000000000000000000000000000000000005",
             "maxTxPayloadBytesPerBlock": 122880,
@@ -247,6 +252,7 @@ mod tests {
                 euclid_time: Some(11),
                 euclid_v2_time: None,
                 feynman_time: Some(100),
+                galileo_time: Some(110),
             }),
             scroll_chain_config: ScrollChainConfig {
                 fee_vault_address: Some(address!("5300000000000000000000000000000000000005")),
diff --git a/crates/scroll/chainspec/src/lib.rs b/crates/scroll/chainspec/src/lib.rs
index aa7fdeae5d9..5688111fd06 100644
--- a/crates/scroll/chainspec/src/lib.rs
+++ b/crates/scroll/chainspec/src/lib.rs
@@ -431,6 +431,7 @@ impl From<Genesis> for ScrollChainSpec {
             (ScrollHardfork::Euclid.boxed(), hard_fork_info.euclid_time),
             (ScrollHardfork::EuclidV2.boxed(), hard_fork_info.euclid_v2_time),
             (ScrollHardfork::Feynman.boxed(), hard_fork_info.feynman_time),
+            (ScrollHardfork::Galileo.boxed(), hard_fork_info.galileo_time),
         ];
 
         let mut time_hardforks = time_hardfork_opts
@@ -545,7 +546,11 @@ mod tests {
                 ),
                 (
                     Head { number: 7096836, timestamp: 1755576000, ..Default::default() },
-                    ForkId { hash: ForkHash([0x38, 0x0f, 0x78, 0x5d]), next: 0 },
+                    ForkId { hash: ForkHash([0x38, 0x0f, 0x78, 0x5d]), next: u64::MAX },
+                ),
+                (
+                    Head { number: 7096836, timestamp: u64::MAX, ..Default::default() },
+                    ForkId { hash: ForkHash([0x50, 0xe7, 0xe6, 0xd5]), next: 0 },
                 ),
             ],
         );
@@ -633,7 +638,11 @@ mod tests {
                 ),
                 (
                     Head { number: 4740239, timestamp: 1753167600, ..Default::default() },
-                    ForkId { hash: ForkHash([0x19, 0xbb, 0x92, 0xc6]), next: 0 },
+                    ForkId { hash: ForkHash([0x19, 0xbb, 0x92, 0xc6]), next: u64::MAX },
+                ),
+                (
+                    Head { number: 4740239, timestamp: u64::MAX, ..Default::default() },
+                    ForkId { hash: ForkHash([0xf8, 0x27, 0xe0, 0xfc]), next: 0 },
                 ),
             ],
         );
@@ -734,6 +743,7 @@ mod tests {
                     (String::from("darwinTime"), 0.into()),
                     (String::from("darwinV2Time"), 0.into()),
                     (String::from("feynmanTime"), 0.into()),
+                    (String::from("galileoTime"), 0.into()),
                     (
                         String::from("scroll"),
                         serde_json::json!({
@@ -777,6 +787,7 @@ mod tests {
             ScrollHardfork::Darwin.boxed(),
             ScrollHardfork::DarwinV2.boxed(),
             ScrollHardfork::Feynman.boxed(),
+            ScrollHardfork::Galileo.boxed(),
         ];
 
         assert!(expected_hardforks
diff --git a/crates/scroll/hardforks/src/lib.rs b/crates/scroll/hardforks/src/lib.rs
index c780f15eb3f..ef55f392492 100644
--- a/crates/scroll/hardforks/src/lib.rs
+++ b/crates/scroll/hardforks/src/lib.rs
@@ -40,6 +40,7 @@ pub static SCROLL_MAINNET_HARDFORKS: LazyLock<ChainHardforks> = LazyLock::new(||
         (ScrollHardfork::Euclid.boxed(), ForkCondition::Timestamp(1744815600)),
         (ScrollHardfork::EuclidV2.boxed(), ForkCondition::Timestamp(1745305200)),
         (ScrollHardfork::Feynman.boxed(), ForkCondition::Timestamp(1755576000)),
+        (ScrollHardfork::Galileo.boxed(), ForkCondition::Timestamp(u64::MAX)),
     ])
 });
 
@@ -64,6 +65,7 @@ pub static SCROLL_SEPOLIA_HARDFORKS: LazyLock<ChainHardforks> = LazyLock::new(||
         (ScrollHardfork::Euclid.boxed(), ForkCondition::Timestamp(1741680000)),
         (ScrollHardfork::EuclidV2.boxed(), ForkCondition::Timestamp(1741852800)),
         (ScrollHardfork::Feynman.boxed(), ForkCondition::Timestamp(1753167600)),
+        (ScrollHardfork::Galileo.boxed(), ForkCondition::Timestamp(u64::MAX)),
     ])
 });
 
@@ -88,5 +90,6 @@ pub static DEV_HARDFORKS: LazyLock<ChainHardforks> = LazyLock::new(|| {
         (ScrollHardfork::Euclid.boxed(), ForkCondition::Timestamp(0)),
         (ScrollHardfork::EuclidV2.boxed(), ForkCondition::Timestamp(0)),
         (ScrollHardfork::Feynman.boxed(), ForkCondition::Timestamp(0)),
+        (ScrollHardfork::Galileo.boxed(), ForkCondition::Timestamp(0)),
     ])
 });