diff --git a/src/capture.rs b/src/capture.rs
index a99eef0f..bce2319d 100644
--- a/src/capture.rs
+++ b/src/capture.rs
@@ -9,7 +9,6 @@ use std::sync::atomic::Ordering::{Acquire, Release};
 use std::sync::Arc;
 use std::mem::size_of;
 
-use crate::id::{Id, HasLength};
 use crate::database::{
     CompactReader,
     CompactWriter,
@@ -19,10 +18,15 @@ use crate::database::{
     data_stream,
     data_stream_with_block_size,
 };
-use crate::rcu::SingleWriterRcu;
-use crate::vec_map::{Key, VecMap};
 use crate::usb::{self, prelude::*};
-use crate::util::{Bytes, fmt_count, fmt_size};
+use crate::util::{
+    id::{Id, HasLength},
+    rcu::SingleWriterRcu,
+    vec_map::{Key, VecMap},
+    Bytes,
+    fmt_count,
+    fmt_size,
+};
 
 use anyhow::{Context, Error, bail};
 use arc_swap::{ArcSwap, ArcSwapOption};
diff --git a/src/database/compact_index.rs b/src/database/compact_index.rs
index 129dbeb9..03efd4d8 100644
--- a/src/database/compact_index.rs
+++ b/src/database/compact_index.rs
@@ -17,8 +17,7 @@ use crate::database::{
     data_stream::{data_stream, DataReader, DataWriter, DataIterator},
     index_stream::{index_stream, IndexReader, IndexWriter, IndexIterator},
 };
-use crate::id::Id;
-use crate::util::{fmt_count, fmt_size};
+use crate::util::{id::Id, fmt_count, fmt_size};
 
 type Offset = Id<u8>;
 type SegmentId = Id<u8>;
diff --git a/src/database/data_stream.rs b/src/database/data_stream.rs
index 4539b839..0d990358 100644
--- a/src/database/data_stream.rs
+++ b/src/database/data_stream.rs
@@ -9,7 +9,7 @@ use std::ops::{Deref, Range};
 use anyhow::Error;
 use bytemuck::{bytes_of, cast_slice, from_bytes, Pod};
 
-use crate::id::Id;
+use crate::util::id::Id;
 use crate::database::stream::{
     stream,
     StreamReader,
diff --git a/src/database/index_stream.rs b/src/database/index_stream.rs
index bfc3c27f..f7eab6de 100644
--- a/src/database/index_stream.rs
+++ b/src/database/index_stream.rs
@@ -17,8 +17,7 @@ use crate::database::{
         DataIterator
     },
 };
-use crate::id::Id;
-use crate::util::{fmt_count, fmt_size};
+use crate::util::{id::Id, fmt_count, fmt_size};
 
 /// Unique handle for append-only write access to an index.
 pub struct IndexWriter<Position, Value, const S: usize = MIN_BLOCK> {
diff --git a/src/decoder.rs b/src/decoder.rs
index 923f4dd6..54832646 100644
--- a/src/decoder.rs
+++ b/src/decoder.rs
@@ -8,9 +8,11 @@ use std::sync::Arc;
 use anyhow::{Context, Error, bail};
 
 use crate::capture::prelude::*;
-use crate::rcu::SingleWriterRcu;
 use crate::usb::{self, prelude::*, validate_packet};
-use crate::vec_map::VecMap;
+use crate::util::{
+    rcu::SingleWriterRcu,
+    vec_map::VecMap,
+};
 
 struct EndpointData {
     device_id: DeviceId,
diff --git a/src/fuzzer.rs b/src/fuzzer.rs
index e4dcf539..b30e3132 100644
--- a/src/fuzzer.rs
+++ b/src/fuzzer.rs
@@ -11,12 +11,9 @@ use libfuzzer_sys::{arbitrary::{Arbitrary, Unstructured}, fuzz_target};
 mod capture;
 mod database;
 mod decoder;
-mod id;
 mod pcap;
-mod rcu;
 mod usb;
 mod util;
-mod vec_map;
 
 use capture::create_capture;
 use decoder::Decoder;
diff --git a/src/item.rs b/src/item.rs
index f3a706f4..265a9aff 100644
--- a/src/item.rs
+++ b/src/item.rs
@@ -20,9 +20,11 @@ use crate::capture::{
     PacketId,
     INVALID_EP_ID,
 };
-use crate::id::HasLength;
 use crate::usb::{self, prelude::*, validate_packet};
-use crate::util::{Bytes, fmt_count, fmt_size, titlecase};
+use crate::util::{
+    id::HasLength,
+    Bytes, fmt_count, fmt_size, titlecase
+};
 
 pub trait ItemSource<Item, ViewMode> {
     /// Fetch an item from the source by index, relative to either the root
diff --git a/src/main.rs b/src/main.rs
index 5273d40f..0ec7caf7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -24,15 +24,12 @@ mod backend;
 mod capture;
 mod database;
 mod decoder;
-mod id;
 mod item;
 mod pcap;
-mod rcu;
 mod test_cynthion;
 mod ui;
 mod usb;
 mod util;
-mod vec_map;
 mod version;
 
 use gtk::prelude::*;
diff --git a/src/usb.rs b/src/usb.rs
index c72156dd..e7d973e8 100644
--- a/src/usb.rs
+++ b/src/usb.rs
@@ -22,8 +22,10 @@ use num_enum::{IntoPrimitive, FromPrimitive};
 use derive_more::{From, Into, Display};
 use usb_ids::FromId;
 
-use crate::util::titlecase;
-use crate::vec_map::VecMap;
+use crate::util::{
+    vec_map::VecMap,
+    titlecase
+};
 
 fn crc16(bytes: &[u8]) -> u16 {
     const CRC16: Crc<u16> = Crc::<u16>::new(&CRC_16_USB);
diff --git a/src/id.rs b/src/util/id.rs
similarity index 100%
rename from src/id.rs
rename to src/util/id.rs
diff --git a/src/util.rs b/src/util/mod.rs
similarity index 98%
rename from src/util.rs
rename to src/util/mod.rs
index 23d75da9..7890e645 100644
--- a/src/util.rs
+++ b/src/util/mod.rs
@@ -5,6 +5,10 @@ use num_format::{Locale, ToFormattedString};
 use humansize::{SizeFormatter, BINARY};
 use itertools::Itertools;
 
+pub mod id;
+pub mod vec_map;
+pub mod rcu;
+
 pub fn fmt_count(count: u64) -> String {
     count.to_formatted_string(&Locale::en)
 }
diff --git a/src/rcu.rs b/src/util/rcu.rs
similarity index 100%
rename from src/rcu.rs
rename to src/util/rcu.rs
diff --git a/src/vec_map.rs b/src/util/vec_map.rs
similarity index 99%
rename from src/vec_map.rs
rename to src/util/vec_map.rs
index caba73b9..e414c261 100644
--- a/src/vec_map.rs
+++ b/src/util/vec_map.rs
@@ -5,7 +5,7 @@ use std::ops::{Index, IndexMut};
 use std::marker::PhantomData;
 use std::slice::Iter;
 
-use crate::id::Id;
+use crate::util::id::Id;
 
 pub trait Key {
     fn id(self) -> usize;