diff --git a/crates/oq3_source_file/Cargo.toml b/crates/oq3_source_file/Cargo.toml
index b96fc9e..4e7dba2 100644
--- a/crates/oq3_source_file/Cargo.toml
+++ b/crates/oq3_source_file/Cargo.toml
@@ -17,4 +17,3 @@ doctest = false
 [dependencies]
 ariadne = { version = "0.3.0", features = ["auto-color"] }
 oq3_syntax.workspace = true
-source-span = { version = "2.7.0" }