diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 03cc5c2c..964db3da 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -182,7 +182,7 @@ jobs:
         with:
           version: ${{ steps.metadata.outputs.rust-version }}
       - run: rustup toolchain install nightly
-      - run: rm Cargo.lock && cargo +nightly update -Z direct-minimal-versions && cargo update -p bumpalo@3.15.3 --precise 3.14.0
+      - run: rm Cargo.lock && cargo +nightly update -Z direct-minimal-versions && cargo update -p bumpalo --precise 3.14.0
       - run: cargo test
 
   test_linux_latest:
diff --git a/cli/src/main.rs b/cli/src/main.rs
index 99a9015d..4dfe0778 100644
--- a/cli/src/main.rs
+++ b/cli/src/main.rs
@@ -1856,7 +1856,6 @@ mod tests {
     use assert_fs::{NamedTempFile, TempDir};
     use flate2::write::GzEncoder;
     use flate2::Compression;
-    use oxhttp::model::Method;
     use predicates::prelude::*;
     use std::fs::remove_dir_all;
     use std::io::read_to_string;
diff --git a/js/src/model.rs b/js/src/model.rs
index dd8a972c..83ed6132 100644
--- a/js/src/model.rs
+++ b/js/src/model.rs
@@ -4,7 +4,6 @@ use crate::format_err;
 use crate::utils::to_err;
 use js_sys::{Reflect, UriError};
 use oxigraph::model::*;
-use oxigraph::sparql::Variable;
 use wasm_bindgen::prelude::*;
 
 thread_local! {
diff --git a/lib/oxigraph/src/io/read.rs b/lib/oxigraph/src/io/read.rs
index c1c3b332..6d01f6f5 100644
--- a/lib/oxigraph/src/io/read.rs
+++ b/lib/oxigraph/src/io/read.rs
@@ -4,7 +4,6 @@
 
 use crate::io::{DatasetFormat, GraphFormat};
 use crate::model::*;
-use oxiri::IriParseError;
 use oxrdfio::{FromReadQuadReader, RdfParseError, RdfParser};
 use std::io::Read;
 
diff --git a/lib/oxigraph/src/sparql/eval.rs b/lib/oxigraph/src/sparql/eval.rs
index 174f41fa..d75f0761 100644
--- a/lib/oxigraph/src/sparql/eval.rs
+++ b/lib/oxigraph/src/sparql/eval.rs
@@ -33,7 +33,7 @@ use std::cmp::Ordering;
 use std::collections::hash_map::DefaultHasher;
 use std::collections::{HashMap, HashSet};
 use std::hash::{Hash, Hasher};
-use std::iter::{empty, once, Iterator};
+use std::iter::{empty, once};
 use std::rc::Rc;
 use std::sync::Arc;
 use std::{fmt, io, str};
diff --git a/lib/oxigraph/src/sparql/model.rs b/lib/oxigraph/src/sparql/model.rs
index f3624ad5..a62264ba 100644
--- a/lib/oxigraph/src/sparql/model.rs
+++ b/lib/oxigraph/src/sparql/model.rs
@@ -5,7 +5,6 @@ use crate::sparql::results::{
     FromReadQueryResultsReader, FromReadSolutionsReader, QueryResultsFormat,
     QueryResultsParseError, QueryResultsParser, QueryResultsSerializer,
 };
-use oxrdf::{Variable, VariableRef};
 pub use sparesults::QuerySolution;
 use std::io::{Read, Write};
 use std::sync::Arc;
diff --git a/lib/oxigraph/src/storage/backend/rocksdb.rs b/lib/oxigraph/src/storage/backend/rocksdb.rs
index ac4f6dff..b665401b 100644
--- a/lib/oxigraph/src/storage/backend/rocksdb.rs
+++ b/lib/oxigraph/src/storage/backend/rocksdb.rs
@@ -9,7 +9,7 @@
 )]
 
 use crate::storage::error::{CorruptionError, StorageError};
-use libc::{self, c_void};
+use libc::c_void;
 use oxrocksdb_sys::*;
 use rand::random;
 use std::borrow::Borrow;
diff --git a/lib/oxrdf/src/literal.rs b/lib/oxrdf/src/literal.rs
index e12caf1c..47da00ff 100644
--- a/lib/oxrdf/src/literal.rs
+++ b/lib/oxrdf/src/literal.rs
@@ -6,7 +6,6 @@ use oxsdatatypes::*;
 use std::borrow::Cow;
 use std::fmt;
 use std::fmt::Write;
-use std::option::Option;
 
 /// An owned RDF [literal](https://www.w3.org/TR/rdf11-concepts/#dfn-literal).
 ///
diff --git a/lib/oxttl/src/trig.rs b/lib/oxttl/src/trig.rs
index e230b9be..e4c5a0b0 100644
--- a/lib/oxttl/src/trig.rs
+++ b/lib/oxttl/src/trig.rs
@@ -1194,8 +1194,7 @@ mod tests {
     #![allow(clippy::panic_in_result_fn)]
 
     use super::*;
-    use oxrdf::vocab::xsd;
-    use oxrdf::{BlankNodeRef, GraphNameRef, LiteralRef, NamedNodeRef};
+    use oxrdf::BlankNodeRef;
 
     #[test]
     fn test_write() -> io::Result<()> {
diff --git a/python/src/model.rs b/python/src/model.rs
index 5933013f..451f1cb0 100644
--- a/python/src/model.rs
+++ b/python/src/model.rs
@@ -1,5 +1,4 @@
 use oxigraph::model::*;
-use oxigraph::sparql::Variable;
 use pyo3::basic::CompareOp;
 use pyo3::exceptions::{PyIndexError, PyNotImplementedError, PyTypeError, PyValueError};
 use pyo3::prelude::*;