diff --git a/Cargo.lock b/Cargo.lock
index 08f333269..8d6182c3d 100644
Binary files a/Cargo.lock and b/Cargo.lock differ
diff --git a/Cargo.toml b/Cargo.toml
index d0ff77a08..1c95c66a6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -65,6 +65,7 @@ libloading = "0.8.5"
 log = { version = "0.4.22", features = ["std"] }
 memchr = "2.7.4"
 once_cell = "1.19.0"
+path-slash = "0.2.1"
 pretty_assertions = "1.4.1"
 rand = "0.8.5"
 regex = "1.10.6"
diff --git a/cli/loader/Cargo.toml b/cli/loader/Cargo.toml
index 5179b36d6..0c4df0af8 100644
--- a/cli/loader/Cargo.toml
+++ b/cli/loader/Cargo.toml
@@ -26,6 +26,7 @@ fs4.workspace = true
 indoc.workspace = true
 libloading.workspace = true
 once_cell.workspace = true
+path-slash.workspace = true
 regex.workspace = true
 serde.workspace = true
 serde_json.workspace = true
diff --git a/cli/loader/src/lib.rs b/cli/loader/src/lib.rs
index 610d0602a..9ecd716c9 100644
--- a/cli/loader/src/lib.rs
+++ b/cli/loader/src/lib.rs
@@ -23,6 +23,7 @@ use fs4::FileExt;
 use indoc::indoc;
 use libloading::{Library, Symbol};
 use once_cell::unsync::OnceCell;
+use path_slash::PathBufExt as _;
 use regex::{Regex, RegexBuilder};
 use serde::{Deserialize, Deserializer, Serialize};
 use tree_sitter::Language;
@@ -823,7 +824,7 @@ impl Loader {
                     path.push(src_path.strip_prefix(root_path).unwrap());
                     path
                 };
-                command.args(["--workdir", &workdir.to_string_lossy()]);
+                command.args(["--workdir", &workdir.to_slash_lossy()]);
 
                 // Mount the root directory as a volume, which is the repo root
                 let mut volume_string = OsString::from(&root_path);