diff --git a/token-group/interface/Cargo.toml b/token-group/interface/Cargo.toml
index 40271ad1092..b748beab31b 100644
--- a/token-group/interface/Cargo.toml
+++ b/token-group/interface/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2021"
 
 [dependencies]
 bytemuck = "1.14.0"
-solana-program = "1.16.3"
+solana-program = "1.16.16"
 spl-discriminator = { version = "0.1.0" , path = "../../libraries/discriminator" }
 spl-pod = { version = "0.1.0" , path = "../../libraries/pod", features = ["borsh"] }
 spl-program-error = { version = "0.3.0" , path = "../../libraries/program-error" }
diff --git a/token-group/interface/src/instruction.rs b/token-group/interface/src/instruction.rs
index 74d862102f4..305f28e4684 100644
--- a/token-group/interface/src/instruction.rs
+++ b/token-group/interface/src/instruction.rs
@@ -18,7 +18,7 @@ use {
 /// Instruction data for initializing a new `Group`
 #[repr(C)]
 #[derive(Clone, Copy, Debug, PartialEq, Pod, Zeroable, SplDiscriminate)]
-#[discriminator_hash_input("spl_token_group_interface:initialize_group")]
+#[discriminator_hash_input("spl_token_group_interface:initialize_token_group")]
 pub struct InitializeGroup {
     /// Update authority for the group
     pub update_authority: OptionalNonZeroPubkey,
@@ -38,7 +38,7 @@ pub struct UpdateGroupMaxSize {
 /// Instruction data for updating the authority of a `Group`
 #[repr(C)]
 #[derive(Clone, Copy, Debug, PartialEq, Pod, Zeroable, SplDiscriminate)]
-#[discriminator_hash_input("spl_token_group_interface:update_group_authority")]
+#[discriminator_hash_input("spl_token_group_interface:update_authority")]
 pub struct UpdateGroupAuthority {
     /// New authority for the group, or unset if `None`
     pub new_authority: OptionalNonZeroPubkey,
@@ -89,7 +89,8 @@ pub enum TokenGroupInterfaceInstruction {
     /// Accounts expected by this instruction:
     ///
     ///   0. `[w]`  Member
-    ///   1. `[s]`  Member update authority
+    ///   1. `[]`   Member mint
+    ///   1. `[s]`  Member mint authority
     ///   2. `[w]`  Group
     ///   3. `[s]`  Group update authority
     InitializeMember(InitializeMember),
@@ -155,7 +156,6 @@ pub fn initialize_group(
     mint_authority: &Pubkey,
     update_authority: Option<Pubkey>,
     max_size: u32,
-    extra_account_metas: &[AccountMeta],
 ) -> Instruction {
     let update_authority = OptionalNonZeroPubkey::try_from(update_authority)
         .expect("Failed to deserialize `Option<Pubkey>`");
@@ -164,16 +164,13 @@ pub fn initialize_group(
         max_size: max_size.into(),
     })
     .pack();
-    let mut accounts = vec![
-        AccountMeta::new(*group, false),
-        AccountMeta::new_readonly(*mint, false),
-        AccountMeta::new_readonly(*mint_authority, true),
-    ];
-    accounts.extend_from_slice(extra_account_metas);
-
     Instruction {
         program_id: *program_id,
-        accounts,
+        accounts: vec![
+            AccountMeta::new(*group, false),
+            AccountMeta::new_readonly(*mint, false),
+            AccountMeta::new_readonly(*mint_authority, true),
+        ],
         data,
     }
 }
@@ -227,21 +224,21 @@ pub fn update_group_authority(
 pub fn initialize_member(
     program_id: &Pubkey,
     member: &Pubkey,
-    member_update_authority: &Pubkey,
+    member_mint: &Pubkey,
+    member_mint_authority: &Pubkey,
     group: &Pubkey,
     group_update_authority: &Pubkey,
 ) -> Instruction {
     let data = TokenGroupInterfaceInstruction::InitializeMember(InitializeMember {}).pack();
-    let accounts = vec![
-        AccountMeta::new(*member, false),
-        AccountMeta::new_readonly(*member_update_authority, true),
-        AccountMeta::new(*group, false),
-        AccountMeta::new_readonly(*group_update_authority, true),
-    ];
-
     Instruction {
         program_id: *program_id,
-        accounts,
+        accounts: vec![
+            AccountMeta::new(*member, false),
+            AccountMeta::new_readonly(*member_mint, false),
+            AccountMeta::new_readonly(*member_mint_authority, true),
+            AccountMeta::new(*group, false),
+            AccountMeta::new_readonly(*group_update_authority, true),
+        ],
         data,
     }
 }
@@ -278,7 +275,7 @@ mod test {
             max_size: 100.into(),
         };
         let instruction = TokenGroupInterfaceInstruction::InitializeGroup(data);
-        let preimage = hash::hashv(&[format!("{NAMESPACE}:initialize_group").as_bytes()]);
+        let preimage = hash::hashv(&[format!("{NAMESPACE}:initialize_token_group").as_bytes()]);
         let discriminator = &preimage.as_ref()[..ArrayDiscriminator::LENGTH];
         instruction_pack_unpack::<InitializeGroup>(instruction, discriminator, data);
     }
@@ -300,7 +297,7 @@ mod test {
             new_authority: OptionalNonZeroPubkey::default(),
         };
         let instruction = TokenGroupInterfaceInstruction::UpdateGroupAuthority(data);
-        let preimage = hash::hashv(&[format!("{NAMESPACE}:update_group_authority").as_bytes()]);
+        let preimage = hash::hashv(&[format!("{NAMESPACE}:update_authority").as_bytes()]);
         let discriminator = &preimage.as_ref()[..ArrayDiscriminator::LENGTH];
         instruction_pack_unpack::<UpdateGroupAuthority>(instruction, discriminator, data);
     }
diff --git a/token-group/interface/src/state.rs b/token-group/interface/src/state.rs
index d26fd2fd2e8..8c5993e5cb6 100644
--- a/token-group/interface/src/state.rs
+++ b/token-group/interface/src/state.rs
@@ -63,14 +63,14 @@ pub struct Member {
     /// The pubkey of the `Group`
     pub group: Pubkey,
     /// The member number
-    pub member_number: u32,
+    pub member_number: PodU32,
 }
 impl Member {
     /// Creates a new `Member` state
     pub fn new(group: Pubkey, member_number: u32) -> Self {
         Self {
             group,
-            member_number,
+            member_number: member_number.into(),
         }
     }
 }
@@ -110,7 +110,7 @@ mod tests {
 
         let member = Member {
             group: Pubkey::new_unique(),
-            member_number: 0,
+            member_number: 0.into(),
         };
 
         let account_size = TlvStateBorrowed::get_base_len()