diff --git a/Cargo.lock b/Cargo.lock
index 742e3c5..fc8e788 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -74,11 +74,12 @@ dependencies = [
 name = "aquatic_common"
 version = "0.1.0"
 dependencies = [
+ "ahash 0.7.6",
  "anyhow",
  "arc-swap",
  "hashbrown 0.11.2",
  "hex",
- "indexmap",
+ "indexmap-amortized",
  "log",
  "privdrop",
  "rand",
@@ -99,8 +100,6 @@ dependencies = [
  "futures-lite",
  "futures-rustls",
  "glommio",
- "hashbrown 0.11.2",
- "indexmap",
  "itoa",
  "log",
  "memchr",
@@ -171,10 +170,8 @@ dependencies = [
  "crossbeam-channel",
  "futures-lite",
  "glommio",
- "hashbrown 0.11.2",
  "hex",
  "histogram",
- "indexmap",
  "log",
  "mimalloc",
  "mio",
@@ -250,7 +247,6 @@ dependencies = [
  "futures-rustls",
  "glommio",
  "hashbrown 0.11.2",
- "indexmap",
  "log",
  "mimalloc",
  "privdrop",
@@ -330,6 +326,12 @@ dependencies = [
  "tungstenite",
 ]
 
+[[package]]
+name = "atone"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a8a5a5e2e3b1e128ec3783765c91c1f392172c1fffc90fd1b96a13bb18e0dd6"
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -927,6 +929,15 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "griddle"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e46a17d0c5d05b045e3814403914aeeb952aa9832f47b1d7ab123ab3d1660454"
+dependencies = [
+ "hashbrown 0.9.1",
+]
+
 [[package]]
 name = "half"
 version = "1.8.0"
@@ -953,6 +964,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7afe4a420e3fe79967a00898cc1f4db7c8a49a9333a29f8a4bd76a253d5cd04"
+
 [[package]]
 name = "hashbrown"
 version = "0.11.2"
@@ -1013,13 +1030,14 @@ dependencies = [
 ]
 
 [[package]]
-name = "indexmap"
-version = "1.7.0"
+name = "indexmap-amortized"
+version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
+checksum = "81b5a05ffb45214e51fdd40c1f773ab57c74d2a7b41cfadc7ea443acf0359df1"
 dependencies = [
+ "atone",
  "autocfg",
- "hashbrown 0.11.2",
+ "griddle",
 ]
 
 [[package]]
diff --git a/aquatic_common/Cargo.toml b/aquatic_common/Cargo.toml
index 3f34d1f..3d9d9b3 100644
--- a/aquatic_common/Cargo.toml
+++ b/aquatic_common/Cargo.toml
@@ -11,11 +11,12 @@ repository = "https://github.com/greatest-ape/aquatic"
 name = "aquatic_common"
 
 [dependencies]
+ahash = "0.7"
 anyhow = "1"
 arc-swap = "1"
 hashbrown = "0.11.2"
 hex = "0.4"
-indexmap = "1"
+indexmap-amortized = "1"
 log = "0.4"
 privdrop = "0.5"
 rand = { version = "0.8", features = ["small_rng"] }
diff --git a/aquatic_common/src/lib.rs b/aquatic_common/src/lib.rs
index 8866e45..58009be 100644
--- a/aquatic_common/src/lib.rs
+++ b/aquatic_common/src/lib.rs
@@ -1,13 +1,15 @@
 use std::net::IpAddr;
 use std::time::{Duration, Instant};
 
-use indexmap::IndexMap;
+use ahash::RandomState;
 use rand::Rng;
 
 pub mod access_list;
 pub mod cpu_pinning;
 pub mod privileges;
 
+pub type AHashIndexMap<K, V> = indexmap_amortized::IndexMap<K, V, RandomState>;
+
 /// Peer or connection valid until this instant
 ///
 /// Used instead of "last seen" or similar to hopefully prevent arithmetic
@@ -32,7 +34,7 @@ impl ValidUntil {
 #[inline]
 pub fn extract_response_peers<K, V, R, F>(
     rng: &mut impl Rng,
-    peer_map: &IndexMap<K, V>,
+    peer_map: &AHashIndexMap<K, V>,
     max_num_peers_to_take: usize,
     sender_peer_map_key: K,
     peer_conversion_function: F,
diff --git a/aquatic_http/Cargo.toml b/aquatic_http/Cargo.toml
index bc0c43b..f6ea2ee 100644
--- a/aquatic_http/Cargo.toml
+++ b/aquatic_http/Cargo.toml
@@ -26,8 +26,6 @@ either = "1"
 futures-lite = "1"
 futures-rustls = "0.22"
 glommio = { git = "https://github.com/DataDog/glommio.git", rev = "4e6b14772da2f4325271fbcf12d24cf91ed466e5" }
-hashbrown = "0.11.2"
-indexmap = "1"
 itoa = "0.4"
 log = "0.4"
 mimalloc = { version = "0.1", default-features = false }
diff --git a/aquatic_http/src/lib/common.rs b/aquatic_http/src/lib/common.rs
index 19e552f..ab499ed 100644
--- a/aquatic_http/src/lib/common.rs
+++ b/aquatic_http/src/lib/common.rs
@@ -3,9 +3,8 @@ use std::sync::Arc;
 use std::time::Instant;
 
 use aquatic_common::access_list::{create_access_list_cache, AccessListArcSwap, AccessListCache};
+use aquatic_common::AHashIndexMap;
 use either::Either;
-use hashbrown::HashMap;
-use indexmap::IndexMap;
 use smartstring::{LazyCompact, SmartString};
 
 pub use aquatic_common::{convert_ipv4_mapped_ipv6, ValidUntil};
@@ -141,7 +140,7 @@ pub struct PeerMapKey<I: Ip> {
     pub ip_or_key: Either<I, SmartString<LazyCompact>>,
 }
 
-pub type PeerMap<I> = IndexMap<PeerMapKey<I>, Peer<I>>;
+pub type PeerMap<I> = AHashIndexMap<PeerMapKey<I>, Peer<I>>;
 
 pub struct TorrentData<I: Ip> {
     pub peers: PeerMap<I>,
@@ -153,14 +152,14 @@ impl<I: Ip> Default for TorrentData<I> {
     #[inline]
     fn default() -> Self {
         Self {
-            peers: IndexMap::new(),
+            peers: Default::default(),
             num_seeders: 0,
             num_leechers: 0,
         }
     }
 }
 
-pub type TorrentMap<I> = HashMap<InfoHash, TorrentData<I>>;
+pub type TorrentMap<I> = AHashIndexMap<InfoHash, TorrentData<I>>;
 
 #[derive(Default)]
 pub struct TorrentMaps {
diff --git a/aquatic_udp/Cargo.toml b/aquatic_udp/Cargo.toml
index e418054..b0ea491 100644
--- a/aquatic_udp/Cargo.toml
+++ b/aquatic_udp/Cargo.toml
@@ -26,9 +26,7 @@ aquatic_common = "0.1.0"
 aquatic_udp_protocol = "0.1.0"
 cfg-if = "1"
 core_affinity = "0.5"
-hashbrown = "0.11.2"
 hex = "0.4"
-indexmap = "1"
 log = "0.4"
 mimalloc = { version = "0.1", default-features = false }
 parking_lot = "0.11"
diff --git a/aquatic_udp/src/lib/common/handlers.rs b/aquatic_udp/src/lib/common/handlers.rs
index 380616a..d14b630 100644
--- a/aquatic_udp/src/lib/common/handlers.rs
+++ b/aquatic_udp/src/lib/common/handlers.rs
@@ -199,7 +199,6 @@ mod tests {
     use std::collections::HashSet;
     use std::net::Ipv4Addr;
 
-    use indexmap::IndexMap;
     use quickcheck::{quickcheck, TestResult};
     use rand::thread_rng;
 
@@ -229,7 +228,7 @@ mod tests {
             let gen_num_peers = data.0 as u32;
             let req_num_peers = data.1 as usize;
 
-            let mut peer_map: PeerMap<Ipv4Addr> = IndexMap::with_capacity(gen_num_peers as usize);
+            let mut peer_map: PeerMap<Ipv4Addr> = Default::default();
 
             let mut opt_sender_key = None;
             let mut opt_sender_peer = None;
diff --git a/aquatic_udp/src/lib/common/mod.rs b/aquatic_udp/src/lib/common/mod.rs
index d448f5a..ea55cce 100644
--- a/aquatic_udp/src/lib/common/mod.rs
+++ b/aquatic_udp/src/lib/common/mod.rs
@@ -4,8 +4,7 @@ use std::sync::Arc;
 use std::time::Instant;
 
 use aquatic_common::access_list::{create_access_list_cache, AccessListArcSwap};
-use hashbrown::HashMap;
-use indexmap::IndexMap;
+use aquatic_common::AHashIndexMap;
 
 pub use aquatic_common::{access_list::AccessList, ValidUntil};
 pub use aquatic_udp_protocol::*;
@@ -80,7 +79,7 @@ pub struct PeerMapKey<I: Ip> {
     pub peer_id: PeerId,
 }
 
-pub type PeerMap<I> = IndexMap<PeerMapKey<I>, Peer<I>>;
+pub type PeerMap<I> = AHashIndexMap<PeerMapKey<I>, Peer<I>>;
 
 pub struct TorrentData<I: Ip> {
     pub peers: PeerMap<I>,
@@ -91,14 +90,14 @@ pub struct TorrentData<I: Ip> {
 impl<I: Ip> Default for TorrentData<I> {
     fn default() -> Self {
         Self {
-            peers: IndexMap::new(),
+            peers: Default::default(),
             num_seeders: 0,
             num_leechers: 0,
         }
     }
 }
 
-pub type TorrentMap<I> = HashMap<InfoHash, TorrentData<I>>;
+pub type TorrentMap<I> = AHashIndexMap<InfoHash, TorrentData<I>>;
 
 #[derive(Default)]
 pub struct TorrentMaps {
diff --git a/aquatic_udp/src/lib/common/network.rs b/aquatic_udp/src/lib/common/network.rs
index 469d658..e0cd81e 100644
--- a/aquatic_udp/src/lib/common/network.rs
+++ b/aquatic_udp/src/lib/common/network.rs
@@ -1,11 +1,11 @@
 use std::{net::SocketAddr, time::Instant};
 
+use aquatic_common::AHashIndexMap;
 pub use aquatic_common::{access_list::AccessList, ValidUntil};
 pub use aquatic_udp_protocol::*;
-use hashbrown::HashMap;
 
 #[derive(Default)]
-pub struct ConnectionMap(HashMap<(ConnectionId, SocketAddr), ValidUntil>);
+pub struct ConnectionMap(AHashIndexMap<(ConnectionId, SocketAddr), ValidUntil>);
 
 impl ConnectionMap {
     pub fn insert(
diff --git a/aquatic_udp/src/lib/glommio/network.rs b/aquatic_udp/src/lib/glommio/network.rs
index df5d186..a32917a 100644
--- a/aquatic_udp/src/lib/glommio/network.rs
+++ b/aquatic_udp/src/lib/glommio/network.rs
@@ -10,6 +10,7 @@ use std::sync::{
 use std::time::{Duration, Instant};
 
 use aquatic_common::access_list::create_access_list_cache;
+use aquatic_common::AHashIndexMap;
 use futures_lite::{Stream, StreamExt};
 use glommio::channels::channel_mesh::{MeshBuilder, Partial, Role, Senders};
 use glommio::channels::local_channel::{new_unbounded, LocalSender};
@@ -17,7 +18,6 @@ use glommio::enclose;
 use glommio::net::UdpSocket;
 use glommio::prelude::*;
 use glommio::timer::TimerActionRepeat;
-use hashbrown::HashMap;
 use rand::prelude::{Rng, SeedableRng, StdRng};
 
 use aquatic_udp_protocol::{IpVersion, Request, Response};
@@ -38,7 +38,7 @@ struct PendingScrapeResponse {
 }
 
 #[derive(Default)]
-struct PendingScrapeResponses(HashMap<TransactionId, PendingScrapeResponse>);
+struct PendingScrapeResponses(AHashIndexMap<TransactionId, PendingScrapeResponse>);
 
 impl PendingScrapeResponses {
     fn prepare(
@@ -266,8 +266,10 @@ async fn read_requests(
                         info_hashes,
                     })) => {
                         if connections.borrow().contains(connection_id, src) {
-                            let mut consumer_requests: HashMap<usize, (ScrapeRequest, Vec<usize>)> =
-                                HashMap::new();
+                            let mut consumer_requests: AHashIndexMap<
+                                usize,
+                                (ScrapeRequest, Vec<usize>),
+                            > = Default::default();
 
                             for (i, info_hash) in info_hashes.into_iter().enumerate() {
                                 let (req, indices) = consumer_requests
diff --git a/aquatic_ws/Cargo.toml b/aquatic_ws/Cargo.toml
index f2a41bb..4c58732 100644
--- a/aquatic_ws/Cargo.toml
+++ b/aquatic_ws/Cargo.toml
@@ -28,7 +28,6 @@ futures = "0.3"
 futures-rustls = "0.22"
 glommio = { git = "https://github.com/DataDog/glommio.git", rev = "4e6b14772da2f4325271fbcf12d24cf91ed466e5" }
 hashbrown = { version = "0.11.2", features = ["serde"] }
-indexmap = "1"
 log = "0.4"
 mimalloc = { version = "0.1", default-features = false }
 privdrop = "0.5"
diff --git a/aquatic_ws/src/lib/common.rs b/aquatic_ws/src/lib/common.rs
index 1b136d9..41cea30 100644
--- a/aquatic_ws/src/lib/common.rs
+++ b/aquatic_ws/src/lib/common.rs
@@ -3,8 +3,7 @@ use std::sync::Arc;
 use std::time::Instant;
 
 use aquatic_common::access_list::{create_access_list_cache, AccessListArcSwap, AccessListCache};
-use hashbrown::HashMap;
-use indexmap::IndexMap;
+use aquatic_common::AHashIndexMap;
 
 pub use aquatic_common::ValidUntil;
 
@@ -66,7 +65,7 @@ pub struct Peer {
     pub valid_until: ValidUntil,
 }
 
-pub type PeerMap = IndexMap<PeerId, Peer>;
+pub type PeerMap = AHashIndexMap<PeerId, Peer>;
 
 pub struct TorrentData {
     pub peers: PeerMap,
@@ -78,14 +77,14 @@ impl Default for TorrentData {
     #[inline]
     fn default() -> Self {
         Self {
-            peers: IndexMap::new(),
+            peers: Default::default(),
             num_seeders: 0,
             num_leechers: 0,
         }
     }
 }
 
-pub type TorrentMap = HashMap<InfoHash, TorrentData>;
+pub type TorrentMap = AHashIndexMap<InfoHash, TorrentData>;
 
 #[derive(Default)]
 pub struct TorrentMaps {