diff --git a/api/src/instruction.rs b/api/src/instruction.rs
index 30c7a28..ac7dcc2 100644
--- a/api/src/instruction.rs
+++ b/api/src/instruction.rs
@@ -15,9 +15,10 @@ pub enum OreInstruction {
 
     // Admin
     SetAdmin = 8,
-    SetFeeCollector = 9,
-    SetFeeRate = 10,
-    SetSniperFeeDuration = 11,
+    SetBlockDuration = 9,
+    SetFeeCollector = 10,
+    SetFeeRate = 11,
+    SetSniperFeeDuration = 12,
 }
 
 #[repr(C)]
@@ -84,6 +85,12 @@ pub struct SetAdmin {
     pub admin: [u8; 32],
 }
 
+#[repr(C)]
+#[derive(Clone, Copy, Debug, Pod, Zeroable)]
+pub struct SetBlockDuration {
+    pub block_duration: [u8; 8],
+}
+
 #[repr(C)]
 #[derive(Clone, Copy, Debug, Pod, Zeroable)]
 pub struct SetFeeCollector {
@@ -111,6 +118,7 @@ instruction!(OreInstruction, Log);
 instruction!(OreInstruction, Mine);
 instruction!(OreInstruction, Swap);
 instruction!(OreInstruction, SetAdmin);
+instruction!(OreInstruction, SetBlockDuration);
 instruction!(OreInstruction, SetFeeCollector);
 instruction!(OreInstruction, SetFeeRate);
 instruction!(OreInstruction, SetSniperFeeDuration);
diff --git a/api/src/sdk.rs b/api/src/sdk.rs
index f62ed0e..66b8526 100644
--- a/api/src/sdk.rs
+++ b/api/src/sdk.rs
@@ -224,6 +224,22 @@ pub fn set_admin(signer: Pubkey, admin: Pubkey) -> Instruction {
     }
 }
 
+pub fn set_block_duration(signer: Pubkey, block_duration: u64) -> Instruction {
+    let config_address = config_pda().0;
+    Instruction {
+        program_id: crate::ID,
+        accounts: vec![
+            AccountMeta::new(signer, true),
+            AccountMeta::new(config_address, false),
+            AccountMeta::new_readonly(system_program::ID, false),
+        ],
+        data: SetBlockDuration {
+            block_duration: block_duration.to_le_bytes(),
+        }
+        .to_bytes(),
+    }
+}
+
 pub fn set_fee_collector(signer: Pubkey, fee_collector: Pubkey) -> Instruction {
     let config_address = config_pda().0;
     Instruction {
@@ -255,3 +271,19 @@ pub fn set_fee_rate(signer: Pubkey, fee_rate: u64) -> Instruction {
         .to_bytes(),
     }
 }
+
+pub fn set_sniper_fee_duration(signer: Pubkey, sniper_fee_duration: u64) -> Instruction {
+    let config_address = config_pda().0;
+    Instruction {
+        program_id: crate::ID,
+        accounts: vec![
+            AccountMeta::new(signer, true),
+            AccountMeta::new(config_address, false),
+            AccountMeta::new_readonly(system_program::ID, false),
+        ],
+        data: SetSniperFeeDuration {
+            sniper_fee_duration: sniper_fee_duration.to_le_bytes(),
+        }
+        .to_bytes(),
+    }
+}
diff --git a/program/src/lib.rs b/program/src/lib.rs
index be7cf0c..b6bcde3 100644
--- a/program/src/lib.rs
+++ b/program/src/lib.rs
@@ -6,6 +6,7 @@ mod mine;
 mod open;
 mod reset;
 mod set_admin;
+mod set_block_duration;
 mod set_fee_collector;
 mod set_fee_rate;
 mod set_sniper_fee_duration;
@@ -19,6 +20,7 @@ use mine::*;
 use open::*;
 use reset::*;
 use set_admin::*;
+use set_block_duration::*;
 use set_fee_collector::*;
 use set_fee_rate::*;
 use set_sniper_fee_duration::*;
@@ -47,6 +49,7 @@ pub fn process_instruction(
 
         // Admin
         OreInstruction::SetAdmin => process_set_admin(accounts, data)?,
+        OreInstruction::SetBlockDuration => process_set_block_duration(accounts, data)?,
         OreInstruction::SetFeeCollector => process_set_fee_collector(accounts, data)?,
         OreInstruction::SetFeeRate => process_set_fee_rate(accounts, data)?,
         OreInstruction::SetSniperFeeDuration => process_set_sniper_fee_duration(accounts, data)?,
diff --git a/program/src/set_block_duration.rs b/program/src/set_block_duration.rs
new file mode 100644
index 0000000..5a19e79
--- /dev/null
+++ b/program/src/set_block_duration.rs
@@ -0,0 +1,24 @@
+use ore_api::prelude::*;
+use steel::*;
+
+/// Sets the block duration.
+pub fn process_set_block_duration(accounts: &[AccountInfo<'_>], data: &[u8]) -> ProgramResult {
+    // Parse data.
+    let args = SetBlockDuration::try_from_bytes(data)?;
+    let new_block_duration = u64::from_le_bytes(args.block_duration);
+
+    // Load accounts.
+    let [signer_info, config_info, system_program] = accounts else {
+        return Err(ProgramError::NotEnoughAccountKeys);
+    };
+    signer_info.is_signer()?;
+    let config = config_info
+        .as_account_mut::<Config>(&ore_api::ID)?
+        .assert_mut(|c| c.admin == *signer_info.key)?;
+    system_program.is_program(&system_program::ID)?;
+
+    // Set fee collector.
+    config.block_duration = new_block_duration;
+
+    Ok(())
+}