diff --git a/python/Cargo.toml b/python/Cargo.toml
index aae74bafb..ec0721edd 100644
--- a/python/Cargo.toml
+++ b/python/Cargo.toml
@@ -10,4 +10,7 @@ test = false
 doctest = false
 
 [dev-dependencies]
-which = "4"
+which = "5"
+
+# This is the last version supporting rustc 1.65
+home = "=0.5.5"
diff --git a/rascaline-c-api/Cargo.toml b/rascaline-c-api/Cargo.toml
index 7c22cf3ef..82c821d23 100644
--- a/rascaline-c-api/Cargo.toml
+++ b/rascaline-c-api/Cargo.toml
@@ -27,9 +27,12 @@ time-graph = {version = "0.3.0", features = ["table", "json"]}
 libc = "0.2"
 
 [build-dependencies]
-cbindgen = { version = "0.24", default-features = false }
+cbindgen = { version = "0.26", default-features = false }
 fs_extra = "1"
 metatensor = "0.1"
 
 [dev-dependencies]
-which = "4"
+which = "5"
+
+# This is the last version supporting rustc 1.65
+home = "=0.5.5"
diff --git a/rascaline-c-api/build.rs b/rascaline-c-api/build.rs
index 00d901f95..9a555b753 100644
--- a/rascaline-c-api/build.rs
+++ b/rascaline-c-api/build.rs
@@ -11,19 +11,19 @@ fn main() {
  *    documentation), make the corresponding changes in the rust sources.      *
  * =========================================================================== */";
 
+    let mut config: cbindgen::Config = Default::default();
+    config.language = cbindgen::Language::C;
+    config.cpp_compat = true;
+    config.includes = vec!["metatensor.h".into()];
+    config.include_guard = Some("RASCALINE_H".into());
+    config.include_version = false;
+    config.documentation = true;
+    config.documentation_style = cbindgen::DocumentationStyle::Doxy;
+    config.header = Some(generated_comment.into());
+
     let result = cbindgen::Builder::new()
         .with_crate(crate_dir)
-        .with_config(cbindgen::Config {
-            language: cbindgen::Language::C,
-            cpp_compat: true,
-            includes: vec!["metatensor.h".into()],
-            include_guard: Some("RASCALINE_H".into()),
-            include_version: false,
-            documentation: true,
-            documentation_style: cbindgen::DocumentationStyle::Doxy,
-            header: Some(generated_comment.into()),
-            ..Default::default()
-        })
+        .with_config(config)
         .generate()
         .map(|data| {
             let mut path = PathBuf::from("include");
diff --git a/rascaline-torch/Cargo.toml b/rascaline-torch/Cargo.toml
index f4f1da5a2..cf437b22c 100644
--- a/rascaline-torch/Cargo.toml
+++ b/rascaline-torch/Cargo.toml
@@ -10,4 +10,7 @@ test = false
 doctest = false
 
 [dev-dependencies]
-which = "4"
+which = "5"
+
+# This is the last version supporting rustc 1.65
+home = "=0.5.5"
diff --git a/rascaline/Cargo.toml b/rascaline/Cargo.toml
index b45ac15a1..5e0866a46 100644
--- a/rascaline/Cargo.toml
+++ b/rascaline/Cargo.toml
@@ -44,7 +44,7 @@ rayon = "1.5"
 
 log = "0.4"
 once_cell = "1"
-indexmap = "1.8"
+indexmap = "2"
 thread_local = "1.1"
 time-graph = "0.3.0"
 
@@ -57,7 +57,11 @@ chemfiles = {version = "0.10", optional = true}
 approx = "0.5"
 
 [dev-dependencies]
-criterion = "0.4"
+criterion = "0.5"
+
+# This is the last version supporting rustc 1.65
+clap = "=4.2.1"
+
 glob = "0.3"
 ndarray-npy = "0.8"
 flate2 = "1.0.20"