diff --git a/.github/workflows/reusable-tests.yaml b/.github/workflows/reusable-tests.yaml
index a06e9b369b..97bc48a061 100644
--- a/.github/workflows/reusable-tests.yaml
+++ b/.github/workflows/reusable-tests.yaml
@@ -395,10 +395,9 @@ jobs:
             path: tests/multisig
           # - cmd: cd tests/lockup && anchor test --skip-lint
           #   path: tests/lockup
-          # TODO: Remove `1.14.18` installation if/when https://github.com/solana-labs/solana/issues/31960 is solved
-          # `swap` tests don't work with Solana `1.16.0`, downgrade to `1.14.18`
-          - cmd: cd tests/swap/deps/openbook-dex/dex && solana-install init 1.14.18 && cargo build-bpf -- --locked && cd ../../../ && solana-install init $SOLANA_CLI_VERSION && anchor test --skip-lint
-            path: tests/swap
+          # TODO: Re-enable after making it work with Solana v2
+          # - cmd: cd tests/swap/deps/openbook-dex/dex && solana-install init 1.14.18 && cargo build-bpf -- --locked && cd ../../../ && solana-install init $SOLANA_CLI_VERSION && anchor test --skip-lint
+          #   path: tests/swap
           - cmd: cd tests/escrow && anchor test --skip-lint && npx tsc --noEmit
             path: tests/escrow
           - cmd: cd tests/pyth && anchor test --skip-lint && npx tsc --noEmit
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f547d28944..9428107cff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -94,6 +94,7 @@ The minor version will be incremented upon a breaking change and the patch versi
 - ts: Remove `StateCoder`([#3224](https://github.com/coral-xyz/anchor/pull/3224)).
 - cli: Accept integers for `warp_slot` ([#3235](https://github.com/coral-xyz/anchor/pull/3235)).
 - lang: Remove `EventIndex` ([#3244](https://github.com/coral-xyz/anchor/pull/3244)).
+- spl: Remove `dex` feature ([#3257](https://github.com/coral-xyz/anchor/pull/3257)).
 
 ## [0.30.1] - 2024-06-20
 
diff --git a/Cargo.lock b/Cargo.lock
index 6867a1613a..c8037db7b3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -111,12 +111,6 @@ dependencies = [
  "alloc-no-stdlib",
 ]
 
-[[package]]
-name = "alloc-traits"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b2d54853319fd101b8dd81de382bcbf3e03410a64d8928bbee85a3e7dcde483"
-
 [[package]]
 name = "anchor-attribute-access-control"
 version = "0.30.1"
@@ -314,11 +308,10 @@ dependencies = [
  "anchor-lang",
  "borsh 0.10.3",
  "mpl-token-metadata",
- "serum_dex",
  "spl-associated-token-account 3.0.2",
  "spl-memo",
  "spl-pod 0.2.2",
- "spl-token 4.0.0",
+ "spl-token",
  "spl-token-2022 3.0.2",
  "spl-token-group-interface 0.2.3",
  "spl-token-metadata-interface 0.3.3",
@@ -1670,26 +1663,6 @@ dependencies = [
  "syn 2.0.55",
 ]
 
-[[package]]
-name = "enumflags2"
-version = "0.6.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83c8d82922337cd23a15f88b70d8e4ef5f11da38dd7cdb55e84dd5de99695da0"
-dependencies = [
- "enumflags2_derive",
-]
-
-[[package]]
-name = "enumflags2_derive"
-version = "0.6.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "946ee94e3dbf58fdd324f9ce245c7b238d46a66f00e86a020b71996349e46cce"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "env_logger"
 version = "0.9.3"
@@ -1748,16 +1721,6 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "835a3dc7d1ec9e75e2b5fb4ba75396837112d2060b03f7d43bc1897c7f7211da"
 
-[[package]]
-name = "field-offset"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38e2275cc4e4fc009b0669731a1e5ab7ebf11f469eaede2bab9309a5b4d6057f"
-dependencies = [
- "memoffset 0.9.0",
- "rustc_version",
-]
-
 [[package]]
 name = "filetime"
 version = "0.2.22"
@@ -2282,15 +2245,6 @@ version = "1.70.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf"
 
-[[package]]
-name = "itertools"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "284f18f85651fe11e8a991b2adb42cb078325c996ed026d994719efcfca1d54b"
-dependencies = [
- "either",
-]
-
 [[package]]
 name = "itertools"
 version = "0.10.5"
@@ -2734,15 +2688,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "num_enum"
-version = "0.5.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f646caf906c20226733ed5b1374287eb97e3c2a5c227ce668c1f2ce20ae57c9"
-dependencies = [
- "num_enum_derive 0.5.11",
-]
-
 [[package]]
 name = "num_enum"
 version = "0.6.1"
@@ -2761,18 +2706,6 @@ dependencies = [
  "num_enum_derive 0.7.2",
 ]
 
-[[package]]
-name = "num_enum_derive"
-version = "0.5.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcbff9bc912032c62bf65ef1d5aea88983b420f4f839db1e9b0c281a25c9c799"
-dependencies = [
- "proc-macro-crate 1.3.1",
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "num_enum_derive"
 version = "0.6.1"
@@ -3563,12 +3496,6 @@ version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
 
-[[package]]
-name = "safe-transmute"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "98a01dab6acf992653be49205bdd549f32f17cb2803e8eacf1560bf97259aae8"
-
 [[package]]
 name = "same-file"
 version = "1.0.6"
@@ -3748,29 +3675,6 @@ dependencies = [
  "unsafe-libyaml",
 ]
 
-[[package]]
-name = "serum_dex"
-version = "0.4.0"
-source = "git+https://github.com/openbook-dex/program/?rev=1be91f2#1be91f2863d8ecede32daaae7e768034e24bbc79"
-dependencies = [
- "arrayref",
- "bincode",
- "bytemuck",
- "byteorder",
- "enumflags2",
- "field-offset",
- "itertools 0.9.0",
- "num-traits",
- "num_enum 0.5.11",
- "safe-transmute",
- "serde",
- "solana-program",
- "spl-token 3.5.0",
- "static_assertions",
- "thiserror",
- "without-alloc",
-]
-
 [[package]]
 name = "sha1"
 version = "0.10.6"
@@ -3926,7 +3830,7 @@ dependencies = [
  "serde_json",
  "solana-config-program",
  "solana-sdk",
- "spl-token 4.0.0",
+ "spl-token",
  "spl-token-2022 1.0.0",
  "spl-token-group-interface 0.1.0",
  "spl-token-metadata-interface 0.2.0",
@@ -4575,7 +4479,7 @@ dependencies = [
  "solana-sdk",
  "spl-associated-token-account 2.3.0",
  "spl-memo",
- "spl-token 4.0.0",
+ "spl-token",
  "spl-token-2022 1.0.0",
  "thiserror",
 ]
@@ -4728,7 +4632,7 @@ dependencies = [
  "num-derive 0.4.0",
  "num-traits",
  "solana-program",
- "spl-token 4.0.0",
+ "spl-token",
  "spl-token-2022 1.0.0",
  "thiserror",
 ]
@@ -4744,7 +4648,7 @@ dependencies = [
  "num-derive 0.4.0",
  "num-traits",
  "solana-program",
- "spl-token 4.0.0",
+ "spl-token",
  "spl-token-2022 3.0.2",
  "thiserror",
 ]
@@ -4932,21 +4836,6 @@ dependencies = [
  "spl-type-length-value 0.4.3",
 ]
 
-[[package]]
-name = "spl-token"
-version = "3.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e85e168a785e82564160dcb87b2a8e04cee9bfd1f4d488c729d53d6a4bd300d"
-dependencies = [
- "arrayref",
- "bytemuck",
- "num-derive 0.3.3",
- "num-traits",
- "num_enum 0.5.11",
- "solana-program",
- "thiserror",
-]
-
 [[package]]
 name = "spl-token"
 version = "4.0.0"
@@ -4978,7 +4867,7 @@ dependencies = [
  "solana-zk-token-sdk",
  "spl-memo",
  "spl-pod 0.1.1",
- "spl-token 4.0.0",
+ "spl-token",
  "spl-token-group-interface 0.1.0",
  "spl-token-metadata-interface 0.2.0",
  "spl-transfer-hook-interface 0.4.1",
@@ -5002,7 +4891,7 @@ dependencies = [
  "solana-zk-token-sdk",
  "spl-memo",
  "spl-pod 0.2.2",
- "spl-token 4.0.0",
+ "spl-token",
  "spl-token-group-interface 0.2.3",
  "spl-token-metadata-interface 0.3.3",
  "spl-transfer-hook-interface 0.6.3",
@@ -5122,12 +5011,6 @@ dependencies = [
  "spl-program-error 0.4.0",
 ]
 
-[[package]]
-name = "static_assertions"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
-
 [[package]]
 name = "string_cache"
 version = "0.8.7"
@@ -5695,15 +5578,6 @@ version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "673aac59facbab8a9007c7f6108d11f63b603f7cabff99fabf650fea5c32b861"
 
-[[package]]
-name = "unsize"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fa7a7a734c1a5664a662ddcea0b6c9472a21da8888c957c7f1eaa09dba7a939"
-dependencies = [
- "autocfg",
-]
-
 [[package]]
 name = "untrusted"
 version = "0.7.1"
@@ -6080,16 +5954,6 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
-[[package]]
-name = "without-alloc"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "375db0478b203b950ef10d1cce23cdbe5f30c2454fd9e7673ff56656df23adbb"
-dependencies = [
- "alloc-traits",
- "unsize",
-]
-
 [[package]]
 name = "x509-parser"
 version = "0.14.0"
diff --git a/spl/Cargo.toml b/spl/Cargo.toml
index 09f08de279..b455bf29d8 100644
--- a/spl/Cargo.toml
+++ b/spl/Cargo.toml
@@ -13,7 +13,6 @@ rustdoc-args = ["--cfg", "docsrs"]
 [features]
 default = ["associated_token", "mint", "token", "token_2022", "token_2022_extensions"]
 associated_token = ["spl-associated-token-account"]
-dex = ["serum_dex"]
 devnet = []
 governance = []
 idl-build = ["anchor-lang/idl-build"]
@@ -29,7 +28,6 @@ token_2022_extensions = ["spl-token-2022", "spl-token-group-interface", "spl-tok
 anchor-lang = { path = "../lang", version = "0.30.1", features = ["derive"] }
 borsh = { version = "0.10.3", optional = true }
 mpl-token-metadata = { version = "4", optional = true }
-serum_dex = { git = "https://github.com/openbook-dex/program/", rev = "1be91f2", version = "0.4.0", features = ["no-entrypoint"], optional = true }
 spl-associated-token-account = { version = "3", features = ["no-entrypoint"], optional = true }
 spl-memo = { version = "4", features = ["no-entrypoint"], optional = true }
 spl-token = { version = "4", features = ["no-entrypoint"], optional = true }
diff --git a/spl/src/dex.rs b/spl/src/dex.rs
deleted file mode 100644
index 0d1df95086..0000000000
--- a/spl/src/dex.rs
+++ /dev/null
@@ -1,299 +0,0 @@
-use anchor_lang::solana_program::account_info::AccountInfo;
-use anchor_lang::solana_program::program_error::ProgramError;
-use anchor_lang::solana_program::pubkey::Pubkey;
-use anchor_lang::{context::CpiContext, Accounts, Result, ToAccountInfos};
-use serum_dex::instruction::SelfTradeBehavior;
-use serum_dex::matching::{OrderType, Side};
-use std::num::NonZeroU64;
-
-pub use serum_dex;
-
-#[cfg(not(feature = "devnet"))]
-anchor_lang::declare_id!("srmqPvymJeFKQ4zGQed1GFppgkRHL9kaELCbyksJtPX");
-
-#[cfg(feature = "devnet")]
-anchor_lang::declare_id!("EoTcMgcDRTJVZDMZWBoU6rhYHZfkNTVEAfz3uUJRcYGj");
-
-#[allow(clippy::too_many_arguments)]
-pub fn new_order_v3<'info>(
-    ctx: CpiContext<'_, '_, '_, 'info, NewOrderV3<'info>>,
-    side: Side,
-    limit_price: NonZeroU64,
-    max_coin_qty: NonZeroU64,
-    max_native_pc_qty_including_fees: NonZeroU64,
-    self_trade_behavior: SelfTradeBehavior,
-    order_type: OrderType,
-    client_order_id: u64,
-    limit: u16,
-) -> Result<()> {
-    let referral = ctx.remaining_accounts.get(0);
-    let ix = serum_dex::instruction::new_order(
-        ctx.accounts.market.key,
-        ctx.accounts.open_orders.key,
-        ctx.accounts.request_queue.key,
-        ctx.accounts.event_queue.key,
-        ctx.accounts.market_bids.key,
-        ctx.accounts.market_asks.key,
-        ctx.accounts.order_payer_token_account.key,
-        ctx.accounts.open_orders_authority.key,
-        ctx.accounts.coin_vault.key,
-        ctx.accounts.pc_vault.key,
-        ctx.accounts.token_program.key,
-        ctx.accounts.rent.key,
-        referral.map(|r| r.key),
-        &ID,
-        side,
-        limit_price,
-        max_coin_qty,
-        order_type,
-        client_order_id,
-        self_trade_behavior,
-        limit,
-        max_native_pc_qty_including_fees,
-    )
-    .map_err(|pe| ProgramError::from(pe))?;
-    anchor_lang::solana_program::program::invoke_signed(
-        &ix,
-        &ToAccountInfos::to_account_infos(&ctx),
-        ctx.signer_seeds,
-    )?;
-    Ok(())
-}
-
-pub fn cancel_order_v2<'info>(
-    ctx: CpiContext<'_, '_, '_, 'info, CancelOrderV2<'info>>,
-    side: Side,
-    order_id: u128,
-) -> Result<()> {
-    let ix = serum_dex::instruction::cancel_order(
-        &ID,
-        ctx.accounts.market.key,
-        ctx.accounts.market_bids.key,
-        ctx.accounts.market_asks.key,
-        ctx.accounts.open_orders.key,
-        ctx.accounts.open_orders_authority.key,
-        ctx.accounts.event_queue.key,
-        side,
-        order_id,
-    )
-    .map_err(|pe| ProgramError::from(pe))?;
-    anchor_lang::solana_program::program::invoke_signed(
-        &ix,
-        &ToAccountInfos::to_account_infos(&ctx),
-        ctx.signer_seeds,
-    )?;
-    Ok(())
-}
-
-pub fn settle_funds<'info>(ctx: CpiContext<'_, '_, '_, 'info, SettleFunds<'info>>) -> Result<()> {
-    let referral = ctx.remaining_accounts.get(0);
-    let ix = serum_dex::instruction::settle_funds(
-        &ID,
-        ctx.accounts.market.key,
-        ctx.accounts.token_program.key,
-        ctx.accounts.open_orders.key,
-        ctx.accounts.open_orders_authority.key,
-        ctx.accounts.coin_vault.key,
-        ctx.accounts.coin_wallet.key,
-        ctx.accounts.pc_vault.key,
-        ctx.accounts.pc_wallet.key,
-        referral.map(|r| r.key),
-        ctx.accounts.vault_signer.key,
-    )
-    .map_err(|pe| ProgramError::from(pe))?;
-    anchor_lang::solana_program::program::invoke_signed(
-        &ix,
-        &ToAccountInfos::to_account_infos(&ctx),
-        ctx.signer_seeds,
-    )?;
-    Ok(())
-}
-
-pub fn init_open_orders<'info>(
-    ctx: CpiContext<'_, '_, '_, 'info, InitOpenOrders<'info>>,
-) -> Result<()> {
-    let ix = serum_dex::instruction::init_open_orders(
-        &ID,
-        ctx.accounts.open_orders.key,
-        ctx.accounts.authority.key,
-        ctx.accounts.market.key,
-        ctx.remaining_accounts.first().map(|acc| acc.key),
-    )
-    .map_err(|pe| ProgramError::from(pe))?;
-    anchor_lang::solana_program::program::invoke_signed(
-        &ix,
-        &ToAccountInfos::to_account_infos(&ctx),
-        ctx.signer_seeds,
-    )?;
-    Ok(())
-}
-
-pub fn close_open_orders<'info>(
-    ctx: CpiContext<'_, '_, '_, 'info, CloseOpenOrders<'info>>,
-) -> Result<()> {
-    let ix = serum_dex::instruction::close_open_orders(
-        &ID,
-        ctx.accounts.open_orders.key,
-        ctx.accounts.authority.key,
-        ctx.accounts.destination.key,
-        ctx.accounts.market.key,
-    )
-    .map_err(|pe| ProgramError::from(pe))?;
-    anchor_lang::solana_program::program::invoke_signed(
-        &ix,
-        &ToAccountInfos::to_account_infos(&ctx),
-        ctx.signer_seeds,
-    )?;
-    Ok(())
-}
-
-pub fn sweep_fees<'info>(ctx: CpiContext<'_, '_, '_, 'info, SweepFees<'info>>) -> Result<()> {
-    let ix = serum_dex::instruction::sweep_fees(
-        &ID,
-        ctx.accounts.market.key,
-        ctx.accounts.pc_vault.key,
-        ctx.accounts.sweep_authority.key,
-        ctx.accounts.sweep_receiver.key,
-        ctx.accounts.vault_signer.key,
-        ctx.accounts.token_program.key,
-    )
-    .map_err(|pe| ProgramError::from(pe))?;
-    anchor_lang::solana_program::program::invoke_signed(
-        &ix,
-        &ToAccountInfos::to_account_infos(&ctx),
-        ctx.signer_seeds,
-    )?;
-    Ok(())
-}
-
-pub fn initialize_market<'info>(
-    ctx: CpiContext<'_, '_, '_, 'info, InitializeMarket<'info>>,
-    coin_lot_size: u64,
-    pc_lot_size: u64,
-    vault_signer_nonce: u64,
-    pc_dust_threshold: u64,
-) -> Result<()> {
-    let authority = ctx.remaining_accounts.get(0);
-    let prune_authority = ctx.remaining_accounts.get(1);
-    let ix = serum_dex::instruction::initialize_market(
-        ctx.accounts.market.key,
-        &ID,
-        ctx.accounts.coin_mint.key,
-        ctx.accounts.pc_mint.key,
-        ctx.accounts.coin_vault.key,
-        ctx.accounts.pc_vault.key,
-        authority.map(|r| r.key),
-        prune_authority.map(|r| r.key),
-        ctx.accounts.bids.key,
-        ctx.accounts.asks.key,
-        ctx.accounts.req_q.key,
-        ctx.accounts.event_q.key,
-        coin_lot_size,
-        pc_lot_size,
-        vault_signer_nonce,
-        pc_dust_threshold,
-    )
-    .map_err(|pe| ProgramError::from(pe))?;
-    anchor_lang::solana_program::program::invoke_signed(
-        &ix,
-        &ToAccountInfos::to_account_infos(&ctx),
-        ctx.signer_seeds,
-    )?;
-    Ok(())
-}
-
-#[derive(Accounts)]
-pub struct NewOrderV3<'info> {
-    pub market: AccountInfo<'info>,
-    pub open_orders: AccountInfo<'info>,
-    pub request_queue: AccountInfo<'info>,
-    pub event_queue: AccountInfo<'info>,
-    pub market_bids: AccountInfo<'info>,
-    pub market_asks: AccountInfo<'info>,
-    // Token account where funds are transferred from for the order. If
-    // posting a bid market A/B, then this is the SPL token account for B.
-    pub order_payer_token_account: AccountInfo<'info>,
-    pub open_orders_authority: AccountInfo<'info>,
-    // Also known as the "base" currency. For a given A/B market,
-    // this is the vault for the A mint.
-    pub coin_vault: AccountInfo<'info>,
-    // Also known as the "quote" currency. For a given A/B market,
-    // this is the vault for the B mint.
-    pub pc_vault: AccountInfo<'info>,
-    pub token_program: AccountInfo<'info>,
-    pub rent: AccountInfo<'info>,
-}
-
-#[derive(Accounts)]
-pub struct CancelOrderV2<'info> {
-    pub market: AccountInfo<'info>,
-    pub market_bids: AccountInfo<'info>,
-    pub market_asks: AccountInfo<'info>,
-    pub open_orders: AccountInfo<'info>,
-    pub open_orders_authority: AccountInfo<'info>,
-    pub event_queue: AccountInfo<'info>,
-}
-
-#[derive(Accounts)]
-pub struct SettleFunds<'info> {
-    pub market: AccountInfo<'info>,
-    pub open_orders: AccountInfo<'info>,
-    pub open_orders_authority: AccountInfo<'info>,
-    pub coin_vault: AccountInfo<'info>,
-    pub pc_vault: AccountInfo<'info>,
-    pub coin_wallet: AccountInfo<'info>,
-    pub pc_wallet: AccountInfo<'info>,
-    pub vault_signer: AccountInfo<'info>,
-    pub token_program: AccountInfo<'info>,
-}
-
-/// To use an (optional) market authority, add it as the first account of the
-/// CpiContext's `remaining_accounts` Vec.
-#[derive(Accounts)]
-pub struct InitOpenOrders<'info> {
-    pub open_orders: AccountInfo<'info>,
-    pub authority: AccountInfo<'info>,
-    pub market: AccountInfo<'info>,
-    pub rent: AccountInfo<'info>,
-}
-
-#[derive(Accounts)]
-pub struct CloseOpenOrders<'info> {
-    pub open_orders: AccountInfo<'info>,
-    pub authority: AccountInfo<'info>,
-    pub destination: AccountInfo<'info>,
-    pub market: AccountInfo<'info>,
-}
-
-#[derive(Accounts)]
-pub struct SweepFees<'info> {
-    pub market: AccountInfo<'info>,
-    pub pc_vault: AccountInfo<'info>,
-    pub sweep_authority: AccountInfo<'info>,
-    pub sweep_receiver: AccountInfo<'info>,
-    pub vault_signer: AccountInfo<'info>,
-    pub token_program: AccountInfo<'info>,
-}
-
-#[derive(Accounts)]
-pub struct InitializeMarket<'info> {
-    pub market: AccountInfo<'info>,
-    pub coin_mint: AccountInfo<'info>,
-    pub pc_mint: AccountInfo<'info>,
-    pub coin_vault: AccountInfo<'info>,
-    pub pc_vault: AccountInfo<'info>,
-    pub bids: AccountInfo<'info>,
-    pub asks: AccountInfo<'info>,
-    pub req_q: AccountInfo<'info>,
-    pub event_q: AccountInfo<'info>,
-    pub rent: AccountInfo<'info>,
-}
-
-#[derive(Clone)]
-pub struct Dex;
-
-impl anchor_lang::Id for Dex {
-    fn id() -> Pubkey {
-        ID
-    }
-}
diff --git a/spl/src/lib.rs b/spl/src/lib.rs
index 12cca5d128..62d1293ac0 100644
--- a/spl/src/lib.rs
+++ b/spl/src/lib.rs
@@ -20,9 +20,6 @@ pub mod token_2022_extensions;
 #[cfg(feature = "token_2022")]
 pub mod token_interface;
 
-#[cfg(feature = "dex")]
-pub mod dex;
-
 #[cfg(feature = "governance")]
 pub mod governance;
 
diff --git a/tests/swap/programs/swap/Cargo.toml b/tests/swap/programs/swap/Cargo.toml
index 9fe3bc2c3b..e9285327fd 100644
--- a/tests/swap/programs/swap/Cargo.toml
+++ b/tests/swap/programs/swap/Cargo.toml
@@ -17,5 +17,5 @@ idl-build = ["anchor-lang/idl-build", "anchor-spl/idl-build"]
 
 [dependencies]
 anchor-lang = { path = "../../../../lang" }
-anchor-spl = { path = "../../../../spl", features = ["dex"] }
+anchor-spl = { path = "../../../../spl" }
 serum_dex = { git = "https://github.com/openbook-dex/program", rev = "1be91f2", version = "0.4.0", features = ["no-entrypoint"] }